x

x [ eks ] (plural x's) or X (plural X's) noun count or uncount

▸ 1 alphabet letter

▸ 2 Roman numeral

▸ 3 in mathematics

▸ 4 name of person/place

▸ 5 symbol for kiss

▸ 6 movie rating

▸ + PHRASES

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

2. ) the ROMAN NUMERAL for 10

3. ) used in mathematics for showing a number whose value you do not know:

In this equation, X equals four.

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

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

5. ) INFORMAL a symbol used for writing a kiss, usually at the end of a letter

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

X marks the spot

used in games and mysteries for saying that something important can be found at a particular place