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  3. TRINOMIAL

Definition of TRINOMIAL

  • (of an algebraic expression) Consisting of three terms
  • (of a systematic name for a taxon) Consisting of three terms of which the first is the name of the genus, the second that of the species, and the third that of the subspecies or variety
  • of three terms joined by + or - [adj TRINOMIALLY] / a trinomial expression [n -S]