Math Dictionary
( A - C ) ( D - F ) ( G - K ) ( L - P ) ( Q - T ) ( U- Z )

L
last quarter - the period of time between the second half moonand the new moon
laterally - in laterall direction.
lateral area - for cones, cylinders ,prism, and pyramids, the area of the figure not including the base
lateral edge of a prism - the intersection of two adjacent lateral faces.
lateral of a pyramid - the edged of the lateral faces that join the vertex to the vertices of the bases.
lateral faces of a prism
parallelogram - shaped regions formed by joining the vertices of the bases of the prism.
of a pyramid - the faces containing the vertex of the pyramid.
latitude - the distances north or south of the equator.
leading coefficient - the coefficient of the first term in a polynomial.
leap year - a year having 366 days.
least common - (LCD) the least positive common multiple of the denominators o ftwo or more fractions or rational expressions.
least common denominator - the least common multiple of the denominator of a group of fractions.
least common multiple - (LCM) is the least common multiple of two or more given quantities without a remainder.
legs in a right triangle - the sides opposite the acute angles.
. In an isosceles triangle - the two congruent sides.
. In an trapezoid - the non parallel sides.
lenght of an arc - in a circle, the fractonal part of the circumference subtended by the arc.
lessee - a person whom a lease is granted.
lessor - a person who grants a lease.
letter of credit - a documentary issued by a bank allowing the person named in it to draw money up to a certain amount from other
specified banks.
letter of intent - a letter in which the signer declares his intention to buy,produce or deliver,issued in advance of a formal contract
lever - a bar which rest on a fixed support called a fulcrum and is used to transmit force and motion especially by moving
a weight at one end to another like a see saw.
less than - the symbol is <, used to compare two quantities which are not equal.
lever - a bar used for prying or dislodging something .
life insurance - a system by which a person pays a small amount regularly to have a large sum paid to his family
or heirs at his death.
light year - the distance that light travels in one year at a speed of 186,282 miles per second.
like fractions - are fractions with the same or equal denominators.
like terms - two or more terms in an algebraic expression that have the same variable base and exponents.
limit - a value of the variable which is used to evaluate an integral calculus.
line - the length of material used in measuring and leveling .
linear - made of lines.
linear equation - representing a linear function an equation that can be written in the
Form y =mx + b
linear function - a function that can be graphically represented by a line.
linear measure - length measurement used to find the one dimensional length of an object.
linear pair - adjacent angles whose non common sides form a line.
linear system - two or more linear equation that are considered together.
line segment - any two distinct points on a line and all the points between them.
liquidate - to settle the account of a business.
liquidator - aperson who liquidates ,especially one appointed, as by a court to conduct the liquidation of a company.
liquid measure - a system of measuring liquids.
literal number - a number represented by a letter.
little - a small amount ,quantity or degree.
local time - time measured from the instant of passing of the mean sun over the particular meridian or a place.
locus - a set of points determined by a certain conditions.
long - that measures , or more than usual ,from end to end in space or time.
longitude - distance east or west on the earths surfaces, measured in degrees from a certain meridian.
loop - a fold or doubling of a line through which another line or hook can be passed.
logarithm - the exponent that indicates the power to which a base is raised to produce a given number.
lowest terms - a faction is said to be in lowest terms if the greatest common factor of the numerator and a denominator
is 1
lucrative - bringing in money;profitable
lunar year - a period of 12 months about .354 1/3 days
lune - anything shaped like a circle.

M
marked down - a lowering of price.
marketable - that can be sold; salable.
market analysis - the study of the extent, charecteristics, and potential of a given market.
market gardener - a person who operates a market garden.
market man - a man who sell in a market.
market price - the price that an article brings when sold.
market research - the study of what makes people buy or not buy a product,when they do it,
how long they may continue, and other similar buying habits.
mark up - an increase in the price of an article.
mark down - a decrease in the price of an article.
market value - the probable at which an article would be bought or sold at a given time on the open market.
mass - the measurement of matter contained in an object.
major arc - the arc in the exterior of the central angle of a circle.
mathematics - the study of numbers measurement and space.
mathematician - a person skilled in mathematics .
mathching fund - is an inducement to obtain enough money in total to pay for some project.
matrix - a rectangular arrangement of numbers in rows and columns, enclosed within brackets.
maturity date - the date that a term of a loan expires .
mean - the sum of the items in a set of date divided by the number of items.
means of proportion - the two inner numbers of proportion:
MEDIAN:
. of a set of data - the middle value of a set of data that are arranged in numerical order;
if there are two middle values, the median is the average of these two value.
. of a trapezoids- the segment joining the midpoints of the nonparallel sides.
. of a triangle - a segment from a vertex to the midpoint of the side opposite the vertex.
medium of exchange - money or anything used as money.
medium frequency - a frequency ranging from 300 to 3000 kilohertz.
medium priced - having a price ranging approximately from between the cheapest and the most expensive of its
kind.
medium term - of , or for a period of time itermediate between long term and short term
medium range - effective or operable over a moderate range.
medium sized - neither large or small of its kind.
megabyte - a unit of computer information approximately equal to one million bytes
megacycle - 1 million cycles per second, used formerly to express the frequency of radio waves, now
expressed megahertz.
megahertz - a unit of frequency equal to 1 million hertz, used to express the frequency of radio waves.
meter - a metric unit of length.
metric system - an international sytem of measurement that uses meter, liter,gram
midpoint - of a segment, is the point that divides the segment into two congruent segments.
milligram - a metric unit of weight (mass). 1000 gram is equal to 0.0154 of a grain.
milliliter - a metric unit of volume.
millimeter - a metric unit of length;1000 of a meter is equal to 0.039937 inch.
minor arc - the endpoints and all the points on both the circle and the interior o the central
angle of the circle.
minima - are points of a curve which are its lowest values.
minimal - least possible very small.
minus sign - the sign indicating that the quantity following is to be subtracted or is a negative quantity.
minimal art - abstract art consisting primarily of simple geometric forms executed in an impersonal style.
minimum - the lowest degree or amount of variaton.
minuend - a number from which another number is to be substracted
minus - a negative quantity or quality.
minuscule - very small
minus sign - a sign used in a mathematics to indicate subtraction or a negative quantity.
minute - a 60th part of an hour or of a degree;60 seconds
miscalculate - to calculate wrongly.
mixed deciaml - a nmber that has a decimal part and fraction part.
mixed expression - is the sum of polynomials and a fraction .
mode - a number that occurs most often.
monomial - a term that is a number,a variable, or the product of a number and one or more variables.
multinomial - an algebraic expression composed of more than one term.
multiple - th eproduct of a quantity by an integers.
multiplication - increase a short method of finding the result of adding a figur the number of times indicated by another figure.
multiplicand - the number that is to be multiplied by another.
multiplicity - a great number of variety.
multiplier - one that multiplies;a number by which another number is multiplied.
multiply - to find the product of by multiplication.
multitude - a great many.

N
national bank - a bank that has charter from national government
national debt - the total amount that the government of a nation owes.
National Hero Day - November 30, a legal holiday in the Phillipines Island.
national income - the total net income of a country for a year.
natural logarithm - the logarithm with the base of e.written in x.
natural numbers - the counting numbers.
negation - the denial of statement.
negative angle - an angle that is measured clockwise.
negative integers - integers less than zero.
negative numbers - a real number less than zero.
net - remaining after deductions.
net proceeds - the total amount left after deducting the commision.
net profit - the total amount left after deducting the operating expenses.
net sales - the total amount left,after deducting the allowances ,refunds and other expenses from gross sales.
n- gon - a polygon with "n" sides
nomogram - a chart from which one can determine by allignment of scales the value of a dependent variable for
any given value of the independent variable.
nomography - the science of computation by means of graphs.
nonagenarian - a person who is 90 years old;between 90 and 100 years old.
nonagon - a 9 sided polygon.
non euclidean - geometrical system which are not in accordance with.
noncollinear - points that do not lie on the same line.
noncoplanar - points or lines that do not lie in the same plane.
normal - perpindicular.
north - the direction to the right as one faces the setting sun.
null set - same as empty set.A set with no elements.
number theory - the study of integers and their relationship.
number line - a line on which every point represent a real number.The parallel postulate.
numeral number - a symbol that stands for a nmber.
numerable - that can be counted .
numeracy - competence in mathematics.
numeral - a name or symbol for number.
numerate - to number count ornumerate
numeration - the process of naming numbers or set of things.
numerator - the number above the line or bar in a fraction.
numerical analysis -the study of mathematical methods of solving a problem.
numerology - the practise of foretelling the future, by th study of supposedly meaningful numbers
or combination of numbers,based on a date of birth, the letters of a name , and other personal factors.
numerous - of great number; very many.

O
oblique - any angle that is not a right angle.Acute angles and obtuse angles are oblique angles.
obtuse - having an angle of more than 90 degrees but less than 180 degrees.
obtuse triangle - a triangle having one obtuse angle.
octant - one eight of a circle; a 45 degrees angle or arc.
octane number - a number used to measure the antiknock properties of gasoline that increase as the likehood of
knocking decrease.
octagon - an 8-sided polygon.
octahedron - a regular solid having eight plane faces or sides.
odd function - a function that satisfies the property that f (-x) = -f(x)
odd number - any number that cannot be divided by 2,3,5,7,9,15, are odd numbers.
odds -the ratio the amount to be paid for a winning bet and the amount of the bet.
open market - the buying and selling of government securities in a free market.
opposites - two numbers are opposites if their sum is 0.
ordered pair - a pair of numbers named in a specific order; a pair of real numbers ( x.y) corresponding to a
point in coordinate system.
order of operations - rules for evaluating algebraic expressions.
ordered pair - any two numbers written in meaningful order,so that one can be considered as the first and the
other as the second of the pair.
ordinal numbers - describe the location of the object in a line or arrangement.
ordinary factor - any number, whether it is even, odd or prime.
ordinate - the second coordinate of a Cartesian ordered pair
origin - in a coordinate system,the intersection of the x -axis and the y-axis.
orometer - an aneroid barometer with scale giving elevations above sea level,used for measuring the
altitudes of mountains.
orometry - the measurement of mountains
orthocenter - the point of intersection of the altitudes of a triangle.
ortographic projection - a projection on a plane by lines perpendicular to the plane.
ortogonal - having to do with or involving right angles.
orthonormal - having to do with or consisting of normal orthogonal elements.
outcome - the result of each trial of an experiment.
outline - a line that shows the shape of an object.
outpayment - an amount paid out.
output - the amount produced ;result of a computer program.
overtime - extra time;beyond the regular hours.
overtime rate - hourly rate paid to employee for the overtime to worked.

P
parabola - the graph of a quardratic function in the form y =ax2 + bx + c.
praboloid - a surface that is formed by rotating a parabola about its axis.
parallelepiped - a solid figure with six faces such that the planes containing two opposites faces are parallel.
parallel lines - lines or planes extended along side one another, always equidistant and however far extended.
parallelogram - four sided plane opposite sides are parallel and equal, such as rectangle or diamond.
parallel planes - planes in space, that do not intersect.
parenthesis - either or both of two used to set off a word,phrase or sentences that explains or qualifies
something within a sentence.
part - something less than the whole.
partial - not complete ; not total.
partial fraction - one of the fraction into which a given fraction can be resolved,the sum of such simpler fraction
being equal to the given fraction.
pass book - small book in which a bank keeps an account of what a person deposits and withdrawn;bankbook.
percent - a fraction in which the denominator is assumed to be 100.
perfect number - a number that is the sum of all its factors except itself.
perfect year - abundant year.
percentile - any value in a series of points on a scale arrived at, by dividing a group into a hundred equal parts in
order of magnitude.
percentum - by the hundred.
pentagon - a 5 sided polygon.
perfect square - the product of a number of polynomial times itself.
perimeter - of a polygon, the sum of the polygon.
perpindicular - two lines are perpindicular if the angle between them is 90 degrees.
period - the measure of how often a function repeats its same value.
periodic function - a function that keeps repeating the same values.
perpindicular bisector - a function segment, or ray that is perpendicular to the segment at its midpoint.
perpindicular lines - two lines that intersect t form right angles; the slopes of two perpindicular lines are negative reciprocals
of each other.
personal computer - a microcomputer that can be individuality programmed and is for the use of one person.
personal property - property that is not land,building mines or forest.
pi - the ratio of circumference to the diameter of a circle.
pictograph - a picture used as a sign or symbol.
placement - the act or process of finding work or a job for a person.
place value - the value of a digit as determined by its place in a number.
plane - a flat surfaces that stretches off into infinity.
plane angle - an angle formed by the intersection of two straight lines in the same place.
plane symmetry - a vertical planes that devides a symmetrical object,such as an aircraft into symmetrical halves.
planimeter - an instrument used for measuring mechanically the area of plane figures,by tracing their boundaries
with a pointer.
planimetry - the measurement of plane surfaces.
plano concave - flat on one side and concave on the other.
plano convex - flat on one side and convex on the other.
plano cylindrical - flat on one side and cylindrical on the other.
plot - to determined the location of a point by means of its coordinates.
point of tangency - the point at which a line in the plane of a circle intersect that circle.
point - slope form - the equation of a line written in the form y -y? =m(x -x?) is a point on the line.
polar coordinates - a coordinate system of ordered pairs in which the first number of the pair
represent distance from the origin,and the second number of the pair represents the angle
of inclination from the horizontal axis.
polyhedron - a 3 - dimensional solid made up of polygonal regions called faces.
polygon - a closed geometric figure formed by fitting segments end-to -end such that,(1) no two segments intersect
except at heir endpoint and (2) no two segment with a common end point are collinear;the boundary of polygonal
region.
polygonal region - the union of a polygon and its interior.
polynomial - amonomial or the sum or difference of monomials.
positive integers - integers that are greater than zero.
postulate - a statement accepted without proof.
prime number - a number that can be divided an exact number of times only by itself and the answer is 1.
principal - a capital sum placed at interest or used as a fund;the amount of money borrowed.
prism - a polyhedron with a pair of identical faces,called bases,that lie in parallel planes.
probability - of an event, the chances or likelihood that an event will occur.
procedure - a particular way of doing something.
proceeds - the total amount or the profit arising from the business deal:return.
product - the result when two or more factors are multiplied.
profit - the amount gained from doing business: to derive business.
profitless - without profit,gain or advantages.
profit margin - the amount by which selling price exceeds cost.
profit sharing - the sharing of profit between employer and employees.
profit taking - the selling of stocks,commodities or real state to take a profit.
profiteer - one who makes what is considered an unreasonable program.
progression - a series of nmbers in which there is always the same relation between each quanitity,and the one succeeding benefit.
proper decimal numbers - a decimal numbers that has no whole numbers.
proper fraction - a fraction whose numerator is less that is denominator .
proof - a valid argument that shows that a mathematical statement , called a theorem , its true
propertional - y = x, then y is said to be proportional to x .
protractor - an intrument in the formed of semicircke for drawing or measuring angle.
prove - to test the correctness; to shows as true and right.
purchase - to get by paying a price: the act of buying .
purchase journal - a book of original entry for recording purchases.
purchase tax - a tax on retail sales of consumer goods,except food, fuel and books
purchase power - the ability to buy things as measured by the amount of money one earns or has available.
pyramid - a solid whose lateral faces are triangle that have one point in common,the vertex of the pyramid.
pythagorean theorem - a theprem that the square of the hypotenuse of a right angles equals the sum of the
squares of the other two sides
pythagorean triple - three natural number that satisfy the pythagorean theorem.