American Dictionary

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Definition x in American English

x noun

[countable/uncountable] noun
/eks/
1

the 24th letter of the English alphabet. X is a consonant.

Synonyms and related words
2

the Roman numeral for 10

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C D i
3

used in mathematics for showing a number whose value you do not know

Example

In this equation, X equals four.

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4

used instead of saying the name of a person or place when you do not know it, or when you are using them as an example

Example

Let us say Mr. X gives a property to his son...

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5

a symbol used for writing a kiss, usually at the end of a letter

Synonyms and related words
1 2 4
6

used in the past for saying that a movie was not appropriate for people under the age of 18

Synonyms and related words
12 15 18
Definition x in American English