xxx
1. [ adjective ] being ten more than twenty
Synonyms: 30 thirty
Related terms: cardinal
2. [ noun ] (genetics) abnormal complement of three X chromosomes in a female
Related terms: sex_chromosome genetics
3. [ noun ] (mathematics) the cardinal number that is the product of ten and three
Synonyms: 30 thirty
Related terms: large_integer
Similar spelling:   xxxi
  XX
  xxxii
  xxy
  xxxiii
  XXI
  XXII
  XXIII