number Definition

  • 1an arithmetical value, expressed by a word, symbol, or figure, representing a quantity, especially a real one
  • 2a quantity or amount
  • 3a single issue of a magazine or newspaper

Using number: Examples

Take a moment to familiarize yourself with how "number" can be used in various situations through the following examples!

  • Example

    The number of students in the class is 30.

  • Example

    I have a large number of books to read.

  • Example

    The latest issue of the magazine is number 50.

number Synonyms and Antonyms

Antonyms for number

Idioms Using number

  • to deceive, cheat, or harm someone


    He did a number on me by selling me a faulty product.

  • crunch the numbers

    to perform a mathematical calculation


    We need to crunch the numbers before making a decision.

  • to support someone or something that is unlikely to succeed


    I think you're backing the wrong horse with that investment.

Phrases with number

  • a sequence of digits used to call a particular telephone


    Can I have your phone number?

  • serial number

    a unique number assigned for identification purposes


    The serial number of the product is printed on the back.

  • a number that is believed to bring good luck


    My lucky number is seven.

Origins of number

from Old French 'nombre', from Latin 'numerus'


Summary: number in Brief

The term 'number' [ˈnʌmbər] refers to an arithmetical value that represents a quantity, such as 'The number of students in the class is 30.' It also denotes a single issue of a magazine or newspaper, as in 'The latest issue of the magazine is number 50.' 'Number' extends into phrases like 'phone number,' and idioms like 'do a number on someone,' meaning to deceive or harm. 'Crunch the numbers' means to perform a mathematical calculation, while 'back the wrong horse' means to support something unlikely to succeed.

How do native speakers use this expression?