Specialist dictionary

Arithmetic

Core number operations, ratios, fractions and numerical reasoning.

Core vocabulary

120 featured terms

The database can contain more terms than shown here; this page prioritises the strongest mappings.

Absolute valuenoun

a real number regardless of its sign

Integernoun

any of the natural numbers (positive or negative) or zero; "an integer is a number that is not a fraction"

Irrationalnoun

a real number that cannot be expressed as a rational number

Irrational numbernoun

a real number that cannot be expressed as a rational number

Natural numbernoun

the number 1 and any other number obtained by adding 1 to it repeatedly

Numerical valuenoun

a real number regardless of its sign

Rationalnoun

an integer or a fraction

Rational numbernoun

an integer or a fraction

Realnoun

any rational or irrational number

Real numbernoun

any rational or irrational number

Square rootnoun

a number that when multiplied by itself equals a given number

Whole numbernoun

any of the natural numbers (positive or negative) or zero; "an integer is a number that is not a fraction"

Exponentnoun

a mathematical notation indicating the number of times a quantity is multiplied by itself

Indexnoun

a mathematical notation indicating the number of times a quantity is multiplied by itself

Powernoun

a mathematical notation indicating the number of times a quantity is multiplied by itself

Divisionnoun

an arithmetic operation that is the inverse of multiplication; the quotient of two numbers is computed

Multiplicationnoun

an arithmetic operation that is the inverse of division; the product of two numbers is computed; "the multiplication of four by three gives twel…

Timesnoun

an arithmetic operation that is the inverse of division; the product of two numbers is computed; "the multiplication of four by three gives twel…

Additionnoun

the arithmetic operation of summing; calculating the sum of two or more numbers; "the summation of four and three gives seven"

Minusnoun

an arithmetic operation in which the difference between two numbers is calculated; "the subtraction of three from four leaves one"; "four minus…

Subtractionnoun

an arithmetic operation in which the difference between two numbers is calculated; "the subtraction of three from four leaves one"; "four minus…

Summationnoun

the arithmetic operation of summing; calculating the sum of two or more numbers; "the summation of four and three gives seven"

Algebraic numbernoun

root of an algebraic equation with rational coefficients

Characteristicnoun

the integer part (positive or negative) of the representation of a logarithm; in the expression ‘log 643 = 2.808’ the characteristic is 2

Common multiplenoun

an integer that is a multiple of two or more other integers

Digitnoun

one of the elements that collectively form a system of numeration; "0 and 1 are digits"

Divisornoun

one of two or more integers that can be exactly divided into another integer; "what are the 4 factors of 6?"

Dot productnoun

a real number (a scalar) that is the product of two vectors

Double digitnoun

a two-digit integer; from 10 to 99

Factornoun

one of two or more integers that can be exactly divided into another integer; "what are the 4 factors of 6?"

Figurenoun

one of the elements that collectively form a system of numeration; "0 and 1 are digits"

Fractionnoun

the quotient of two rational numbers

Inner productnoun

a real number (a scalar) that is the product of two vectors

Large integernoun

an integer equal to or greater than ten

Modulusnoun

the absolute value of a complex number

Modulusnoun

an integer that can be divided without remainder into the difference between two other integers; "2 is a modulus of 5 and 9"

Populationnoun

the number of inhabitants (either the total number or the number of a particular race or class) in a given place (country or city etc.); "people…

Scalar productnoun

a real number (a scalar) that is the product of two vectors

Transcendental numbernoun

an irrational number that is not algebraic

Amountnoun

a quantity obtained by the addition of a group of numbers

Decimalnoun

a proper fraction whose denominator is a power of 10

Differencenoun

the number that remains after subtraction; the number that when added to the subtrahend gives the minuend

Multiplenoun

the product of a quantity by an integer; "36 is a multiple of 9"

Percentagenoun

a proportion in relation to a whole (which is usually the amount per hundred); ten percent

Proportionnoun

the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree; "an inordinate proportion of…

Proportionnoun

the quotient obtained when the magnitude of a part is divided by the magnitude of the whole

Quotientnoun

the number obtained by division

Rationoun

the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree; "an inordinate proportion of…

Remaindernoun

the number that remains after subtraction; the number that when added to the subtrahend gives the minuend

Sumnoun

a quantity obtained by the addition of a group of numbers

Totalnoun

a quantity obtained by the addition of a group of numbers

Degreenoun

the highest power of a term or variable

Lognoun

the exponent required to produce a given number

Logarithmnoun

the exponent required to produce a given number

Acenoun

the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch a…

Billionnoun

the number that is represented as a one followed by 9 zeros

Billionnoun

the number that is represented as a one followed by 12 zeros; in the United Kingdom the usage followed in the United States is frequently seen

Centurynoun

ten 10s

Chiliadnoun

the cardinal number that is the product of 10 and 100

Cinquenoun

the cardinal number that is the sum of four and one

Ciphernoun

a mathematical element that when added to another number yields the same number

Crorenoun

the number that is represented as a one followed by 7 zeros; ten million

Cyphernoun

a mathematical element that when added to another number yields the same number

Decadenoun

the cardinal number that is the sum of nine and one; the base of the decimal system

Deucenoun

the cardinal number that is the sum of one and one or a numeral representing this number

Dozennoun

the cardinal number that is the sum of eleven and one

Eightnoun

the cardinal number that is the sum of seven and one

Eighteennoun

the cardinal number that is the sum of seventeen and one

Eightynoun

the cardinal number that is the product of ten and eight

Elevennoun

the cardinal number that is the sum of ten and one

Enneadnoun

the cardinal number that is the sum of eight and one

Fifteennoun

the cardinal number that is the sum of fourteen and one

Fiftynoun

the cardinal number that is the product of ten and five

Finnoun

the cardinal number that is the sum of four and one

Fivenoun

the cardinal number that is the sum of four and one

Fortynoun

the cardinal number that is the product of ten and four

Fournoun

the cardinal number that is the sum of three and one

Fourscorenoun

the cardinal number that is the product of ten and eight

Fourteennoun

the cardinal number that is the sum of thirteen and one

Grandnoun

the cardinal number that is the product of 10 and 100

Grossnoun

twelve dozen

Heptadnoun

the cardinal number that is the sum of six and one

Hexadnoun

the cardinal number that is the sum of five and one

Hundrednoun

ten 10s

Lakhnoun

the cardinal number that is the fifth power of ten

Leashnoun

the cardinal number that is the sum of one and one and one

Mantissanoun

the positive fractional part of the representation of a logarithm; in the expression ‘log 643 = 2.808’ the mantissa is .808

Millionnoun

the number that is represented as a one followed by 6 zeros

Myriadnoun

the cardinal number that is the product of ten and one thousand

Ninenoun

the cardinal number that is the sum of eight and one

Nineteennoun

the cardinal number that is the sum of eighteen and one

Ninetynoun

the cardinal number that is the product of ten and nine

Noughtnoun

a mathematical element that when added to another number yields the same number

Octadnoun

the cardinal number that is the sum of seven and one

Octetnoun

the cardinal number that is the sum of seven and one

Octillionnoun

the number that is represented as a one followed by 27 zeros

Octonarynoun

the cardinal number that is the sum of seven and one

Ogdoadnoun

the cardinal number that is the sum of seven and one

Onenoun

the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch a…

Pentadnoun

the cardinal number that is the sum of four and one

Phoebenoun

the cardinal number that is the sum of four and one

Pinoun

the ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846 …

Quadrillionnoun

the number that is represented as a one followed by 15 zeros

Quadrillionnoun

the number that is represented as a one followed by 24 zeros in the UK; "in England they call a septillion a ‘quadrillion’"

Quartetnoun

the cardinal number that is the sum of three and one

Quaternarynoun

the cardinal number that is the sum of three and one

Quaternionnoun

the cardinal number that is the sum of three and one

Quaternitynoun

the cardinal number that is the sum of three and one

Quintnoun

the cardinal number that is the sum of four and one

Quintetnoun

the cardinal number that is the sum of four and one

Septenarynoun

the cardinal number that is the sum of six and one

Septetnoun

the cardinal number that is the sum of six and one

Septillionnoun

the number that is represented as a one followed by 24 zeros in the US

Sestetnoun

the cardinal number that is the sum of five and one

Sevennoun

the cardinal number that is the sum of six and one

Seventeennoun

the cardinal number that is the sum of sixteen and one

Seventynoun

the cardinal number that is the product of ten and seven

Sextetnoun

the cardinal number that is the sum of five and one

Sextillionnoun

the number that is represented as a one followed by 21 zeros

Singlenoun

the smallest whole number or a numeral representing this number; "he has the one but will need a two and three to go with it"; "they had lunch a…