Number Definition

Define what is Number?

1. number, figure (noun)

the property possessed by a sum or total or indefinite quantity of units or individuals.

  • he had a number of chores to do.
  • the number of parameters is small.
  • the figure was about a thousand.
Synonyms: figure

amount noun
the relative magnitude of something with reference to a criterion.


numerosity, numerousness, multiplicity noun
a large number.

preponderance, prevalence noun
a superiority in numbers or amount.

countlessness, innumerableness noun
a number beyond counting.

bulk, majority noun
the property resulting from being or relating to the greater in number of two parts; the main part.

minority noun
being or relating to the smaller in number of two parts.

fewness noun
the quality of being small in number.

roundness noun
the quality of being round numbers.

2. number, total, amount, add up, come (verb)

add up in number or quantity.

  • The bills amounted to $2,000.
  • The bill came to $2,000.
Synonyms: total, amount, add up, come

Be verb
have the quality of being; (copula, used with an adjective or a predicate noun).


work out verb
be calculated.

outnumber verb
be larger in number.

average, average out verb
amount to or come to an average, without loss or gain.

make verb
add up to.

3. number (noun)

a concept of quantity involving zero and units.

  • every number has a unique position in the sequence.

definite quantity noun
a specific measure of amount.


arity noun
the number of arguments that a function can take.

co-ordinate, coordinate noun
a number that identifies a position relative to an axis.

folio, page number, pagination, paging noun
the system of numbering pages.

decimal noun
a number in the decimal system.

constant noun
a number representing a quantity assumed to have a fixed value in a specified mathematical context.

oxidation number, oxidation state noun
the degree of oxidation of an atom or ion or molecule; for simple atoms or ions the oxidation number is equal to the ionic charge.

cardinality noun
(mathematics) the number of elements in a set or group (considered as a property of that grouping).

count noun
the total number counted.

factor noun
any of the numbers (or symbols) that form a product when multiplied together.

Fibonacci number noun
a number in the Fibonacci sequence.

prime, prime quantity noun
a number that has no factor but itself and 1.

composite number noun
an integer that is divisible without remainder by at least one positive integer other than itself and one.

score noun
a number that expresses the accomplishment of a team or an individual in a game or contest.

record noun
the number of wins versus losses and ties a team has had.

compound number noun
a quantity expressed in two different units.

no., ordinal, ordinal number noun
the number designating place in an ordered sequence.

cardinal number, cardinal noun
the number of elements in a mathematical set; denotes a quantity but not the order.

radix, Base noun
(numeration system) the positive integer that is equivalent to one in the next higher counting place.

floating-point number noun
a number represented in floating-point notation.

fixed-point number noun
a number represented in fixed-point notation.

atomic number noun
the order of an element in Mendeleyev's table of the elements; equal to the number of protons in the nucleus or electrons in the neutral state of an atom of an element.

baryon number noun
a number equal to the difference between the number of baryons and the number of antibaryons in any subatomic structure; it is conserved in all types of particle interactions.

quota noun
a prescribed number.

linage, lineage noun
the number of lines in a piece of printed material.

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

integer, whole number noun
any of the natural numbers (positive or negative) or zero.

addend noun
a number that is added to another number (the augend).

augend noun
a number to which another number (the addend) is added.

minuend noun
the number from which the subtrahend is subtracted.

subtrahend noun
the number to be subtracted from the minuend.

remainder, difference noun
the number that remains after subtraction; the number that when added to the subtrahend gives the minuend.

complex number, complex quantity, imaginary, imaginary number noun
(mathematics) a number of the form a+bi where a and b are real numbers and i is the square root of -1.

second power, square noun
the product of two equal terms.

third power, cube noun
the product of three equal terms.

biquadrate, biquadratic, fourth power, quartic noun
an algebraic equation of the fourth degree.

root noun
a number that, when multiplied by itself some number of times, equals a given number.

dividend noun
a number to be divided by another number.

divisor noun
the number by which a dividend is divided.

quotient noun
the number obtained by division.

remainder noun
the part of the dividend that is left over when the dividend is not evenly divisible by the divisor.

multiplier, multiplier factor noun
the number by which a multiplicand is multiplied.

multiplicand noun
the number that is multiplied by the multiplier.

4. number (verb)

give numbers to.

  • You should number the pages of the thesis.

denominate, designate verb
assign a name or title to.


paginate, Page, foliate verb
number the pages of a book or manuscript.

5. routine, number, act, bit, turn (noun)

a short theatrical performance that is part of a longer program.

  • he did his act three times every evening.
  • she had a catchy little routine.
  • it was one of the best numbers he ever did.
Synonyms: routine, act, bit, turn

performance, public presentation noun
a dramatic or musical entertainment.


show-stopper, showstopper, stopper noun
an act so striking or impressive that the show must be delayed until the audience quiets down.

6. number, list (verb)


  • We must number the names of the great mathematicians.
Synonyms: list

identify, name verb
give the name or identifying characteristics of; refer to by name or some other identifying characteristic property.


itemise, itemize verb
place on a list of items.

7. phone number, telephone number, number (noun)

the number is used in calling a particular telephone.

  • he has an unlisted number.

signal, signaling, sign noun
any nonverbal action or gesture that encodes a message.

8. number, count (verb)

put into a group.

  • The academy counts several Nobel Prize winners among its members.
Synonyms: count

class, classify, sort out, assort, sort, separate verb
arrange or order by classes or categories.

9. numeral, number (noun)

a symbol used to represent a number.

  • he learned to write the numerals before he went to school.
Synonyms: numeral

symbol noun
an arbitrary sign (written or printed) that has acquired a conventional significance.


Arabic numeral, Hindu-Arabic numeral, Hindu numeral noun
one of the symbols 1,2,3,4,5,6,7,8,9,0.

Roman numeral noun
a symbol in the old Roman notation; I,V,X,L,C,D,M represent 1,5,10,50,100,500,1000 respectively in Arabic notation.

antilog, antilogarithm noun
the number of which a given number is the logarithm.

10. count, numerate, enumerate, number (verb)

determine the number or amount of.

  • Can you count the books on your shelf?.
  • Count your change.

ascertain, determine, find out, find verb
establish after a calculation, investigation, experiment, survey, or study.


recount verb
count again.

miscount verb
count wrongly.

census verb
conduct a census.

tote up, tot up, tot, summate, add together, sum, add up, total, sum up, tally, ADD verb
determine the sum of.

11. keep down, number (verb)

place a limit on the number of.

    Synonyms: keep down

    circumscribe, confine, limit verb
    restrict or confine,.

    12. issue, number (noun)

    one of a series published periodically.

    • she found an old issue of the magazine in her dentist's waiting room.
    Synonyms: issue

    periodical noun
    a publication that appears at fixed intervals.


    edition noun
    an issue of a newspaper.

    13. number (noun)

    a select company of people.

    • I hope to become one of their number before I die.

    company noun
    a social gathering of guests or companions.

    14. identification number, number (noun)

    a numeral or string of numerals that is used for identification.

    • she refused to give them her Social Security number.

    positive identification noun
    evidence proving that you are who you say you are; evidence establishing that you are among the group of people already known to the system; recognition by the system leads to acceptance.


    ABA transit number, bank identification number, BIN noun
    an identification number consisting of a two-part code assigned to banks and savings associations; the first part shows the location and the second identifies the bank itself.

    license number, registration number noun
    the number on the license plate that identifies the car that bears it.

    Social Security number noun
    the number of a particular individual's Social Security account.

    personal identification number, PIN number, PIN noun
    a number you choose and use to gain access to various accounts.

    15. number (noun)

    a clothing measurement.

    • a number 13 shoe.

    size noun
    the property resulting from being one of a series of graduated measurements (as of clothing).

    16. number (noun)

    the grammatical category for the forms of nouns and pronouns and verbs that are used depending on the number of entities involved (singular or dual or plural).

    • in English the subject and the verb must agree in number.

    grammatical category, syntactic category noun
    (grammar) a category of words having the same grammatical properties.

    17. number (noun)

    an item of merchandise offered for sale.

    • she preferred the black nylon number.
    • this sweater is an all-wool number.

    merchandise, product, ware noun
    commodities offered for sale.

    Nearby Terms

    number 1 (noun)
    the first element in a countable series

    number agreement (noun)
    agreement in number between words in the same grammatical construction (e.g., between adjectives and the nouns they modify)

    number cruncher (noun)
    someone able to perform complex and lengthy calculations

    number crunching (noun)
    performing complex and lengthy numerical calculations

    number one (noun)
    a reference to yourself or myself etc.; `take care of number one' means to put your own interests first

    number one wood (noun)
    a golf club (a wood) with a near vertical face that is used for hitting long shots from the tee

    number representation system (noun)
    any notation for the representation of numbers

    number system (noun)
    any notation for the representation of numbers

    number theorist (noun)
    a mathematician specializing in number theory

    numbering (noun)
    a numbered list

    numberless (adjective satellite)
    too numerous to be counted

    numberplate (noun)
    a plate mounted on the front and back of car and bearing the car's registration number

    Numbers (noun)
    the fourth book of the Old Testament; contains a record of the number of Israelites who followed Moses out of Egypt

    numbers game (noun)
    an illegal daily lottery

    numbers pool (noun)
    an illegal daily lottery