x
1. [ adjective ] being one more than nine
Synonyms: ten 10
Related terms: cardinal
2. [ noun ] the 24th letter of the Roman alphabet
Related terms: letter Roman_alphabet
3. [ noun ] (pharmacology) designer drug designed to have the effects of amphetamines (it floods the brain with serotonin) but to avoid the drug laws; in 1985 it was declared illegal
Synonyms: MDMA Adam ecstasy cristal disco_biscuit go hug_drug xtc methylenedioxymethamphetamine
Related terms: club_drug designer_drug
4. [ noun ] (mathematics) the cardinal number that is the sum of nine and one; the base of the decimal system
Synonyms: ten 10 decade tenner
Related terms: large_integer
Similar spelling:   xy
  Xu
  xi
  Xe
  xyy
  XII
  Xie