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English definition of “number”

number

noun (AMOUNT)    /ˈnʌm.bər/ US  /-bɚ/
B1 [S, + sing/pl verb] an amount or total : The number of people killed in road accidents fell last month . There has been an increasing number of cases of the disease . A small number of children are educated at home . A large number of invitations has been sent . Letters of complaint were surprisingly few in number (= there were not many of them).General words for size and amount numbers [plural] a number of a particular description : Small numbers of children are educated at home . Large numbers of invitations were sent . Newspapers are produced in vast numbers.General words for size and amount a number of things B2 several of a particular type of thing: I decided not to go, for a number of reasons .General words for size and amount [S, + sing/pl verb] a group of people : On the trip , one of our number fell ill .Groups of people Grammar:Amount of, number of or quantity of?Grammar:Amount of or number of?We use amount of with uncountable nouns. Number of is used with countable nouns:Grammar:A quantity of or quantities of?Quantity is more formal than amount or number. A quantity of or quantities of can be followed by a countable noun or an uncountable noun. They are most commonly used with an adjective such as huge, big, large, small:Grammar:NumberWhen we use the word number, we refer to specific numbers:Grammar:Numbers: first, second, thirdNumbers such as first, second, third are ordinal numbers. We use them to put things in an order. We most commonly use ordinal numbers as determiners. When we use ordinal numbers as determiners (before nouns), we commonly use other determiners such as articles (a/an, the) and possessives (my, your) in front of them:Grammar:Numbers: one, two, threeNumbers such as one, five, eleven, two hundred are cardinal numbers. We most commonly use cardinal numbers as determiners (before nouns). When we use them in this way, we can use other determiners such as articles (a/an, the) and possessives (my, your) in front of them. We can use cardinal numbers + of before determiners (one of my friends):
(Definition of number noun (AMOUNT) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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