Longman Dictionary of Contemporary English homepage

Topic: NUMBERS


X

1 noun
     
X1 , x plural X's, x's
1

letter

[uncountable and countable]SLA the 24th letter of the English alphabet
2HMN

number

[countable] the number 10 in the system of roman numerals
3

mathematics

[uncountable] technicalHM a letter used in mathematics to represent an unknown quantity or value:
if 3x = 6, x = 2
4

on school work

SE [countable] a mark used on school work to show that a written answer is not correct
5

when voting

PPV [countable] a mark used to show that you have chosen something on an official piece of paper, for example when voting
6

on a letter

TCM [countable] a mark used to show a kiss, especially at the end of a letter:
Love, Cindy XXX
7

film

[singular, uncountable]AMF used in the past to describe a film that was officially approved as only suitable for people over 18 [= 18] X-rated
8

unknown/secret name

[uncountable] a letter used instead of someone's or something's real name because you want to keep it secret or you do not know it:
At the trial, Ms X said that she had known the defendant for three years.
9

when signing your name

[countable] a mark used instead of a signature by someone who cannot write
10

X number of people/things

used to say that there are a number of people or things when the exact number is not important
11

X marks the spot

used on maps in adventure stories to show that something is buried in a particular place
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