- number
**1**__noun__—see also: cardinal number, ordinal number, prime number, whole numberNUMBER (C) a word or sign which represents an amount or a quantity: Add together the following numbers: 1027, 643, and 378. | high/low number: Choose a fairly low number - under 100, say. | even number (=2, 4, 6, 8, 10 etc) | odd number (=1, 3, 5, 7, 9 etc) | round number (=a number ending in 0): I'll give her -17 - no, make it -20. That's a good round number. | be good/no good etc with numbers*1*(=to be good, bad etc at calculating things using numbers)__informal__—see also: E number, No. 10, number oneIN A SET/LIST (C) a number used to show the position of something in an ordered set or list: We live at 107 Castle Street. | Answer question number 4. | a number 17 bus*2***1**—see also: box number, PIN, serial numbermodel/account/fax etc number a number used to communicate with someone, to find information about someone or something etc: What is your account number, please?*3*TELEPHONE a telephone number: My new number is 502655. | sb's home/office/work number: I gave him my home number. | wrong number: “Is that 70348?” - “No, I'm afraid you have the wrong number.”*4*CAR*5*the official series of numbers and letters shown on a motor vehicle; registration number: Did you get the number of the car?__BrE__—see amountAMOUNT (*6*) also numbers__singular__an amount of something that can be counted; a quantity: The number of cars on our roads rose dramatically last year. | Estimates put the number of deaths at between three and five thousand. | a large/great/small etc number of also large/great/small etc numbers of: Doctors believe only a tiny number of people are at risk. | in large/great/small etc numbers: They were printed in limited numbers. | bring the number of sth to five/ten etc: This latest bomb brings the number of terrorist attacks this year to seven. | ten/twelve etc in number__plural__: A small number of protesters, about 20 in number, gathered outside.__formal__**1**numbers (*7*) how many people there are, especially people attending an event or doing an activity together: Can you give me some idea of numbers? | student/client etc numbers: Visitor numbers increase in the summer.__plural__by (sheer) force/weight of numbers if a group of people is defeated by force of numbers, it is defeated because many more people are attacking or opposing it*8*a number of*9*several: She has written a number of articles for the local paper. | a good number of/quite a number of (=a lot of): Darke knew a good number of people with government connections. | a number of ways/reasons/factors etc (=various different ways etc): These paintings differ from his earlier ones in a number of ways. | any number of: There could be any number of reasons why she's late.__formal__some/none/20 etc of sb's number*10*some etc of a group of people: Only three of our number could speak Italian.__formal__—see also: production numberMUSIC (C) a piece of popular music that forms part of a longer performance: Madonna sang several numbers from her latest album.*11*a recent/an old/last month's number*12*a copy of a magazine printed recently, a long time ago etc; issue__BrE__**1**(2): back number (=an old copy of a magazine)__AmE__have sb's number*13*to understand something about someone that helps you deal with them: You'll never fool her, Mike - she's got your number!__informal__sb's number is up/has come up*14*someone will suffer or be punished: Your number's up Hanks!__informal__black/elegant etc (little) number*15*a black etc dress: Sue turned up in a very elegant number.__informal__sb's number comes up someone has the winning number in a competition*16*the number of times I've*17*used to say that you have done something many times, without any result: Honestly, the number of times I've told that girl not to walk home alone.__spoken__the numbers an illegal game in the US in which people risk money on the appearance of a combination of numbers in a newspaper: playing the numbers*18*beyond/without number literary if things are beyond number, there are so many of them that no one could count them all*19*GRAMMAR (U)*20*__technical__the form of a word, depending on whether one thing or more than one thing is being talked about: `Horses' isin number, `horse' is__plural__.__singular__**2**__verb__(T) to give a number to something that is part of an ordered set or list: They haven't numbered the pages of the report. | All the seats in the theatre are numbered. | number sth (from) 1 to 10/100 etc: Number the questions 1 to 25. | a numbering system*1*his/their/its days are numbered someone or something cannot live or continue much longer*2*number several thousands/almost a million etc to be several thousands etc: The crowd numbered at least 7000. | The men on strike now number 5% of the workforce.*3*number among/ be numbered among*4*to be included as one of a particular group: Amis numbers among the best of our younger writers.__formal__number off(T) literary to count: Who can number the stars?*5*(I)__phrasal verb____BrE____technical__if soldiers number off, they call out their number when their turn comes; count off__AmE__

*Longman dictionary of contemporary English.
2004.*