X

/ɛks/
IPA guide

Definitions of X
  1. noun
    the cardinal number that is the sum of nine and one; the base of the decimal system
    synonyms: 10, decade, ten, tenner
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    type of:
    large integer
    an integer equal to or greater than ten
  2. noun
    the 24th letter of the Roman alphabet
    synonyms: ex, x
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    type of:
    alphabetic character, letter, letter of the alphabet
    the conventional characters of the alphabet used to represent speech
  3. noun
    street names for methylenedioxymethamphetamine
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    type of:
    MDMA, methylenedioxymethamphetamine
    a stimulant drug that is chemically related to mescaline and amphetamine and is used illicitly for its euphoric and hallucinogenic effects; it was formerly used in psychotherapy but in 1985 it was declared illegal in the United States
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