Webster's Revised Unabridged Dictionary · 1913

Trigamous

Trigamous , adjective

[Latin trigamus a thrice-married man, Greek {not transcribed} thrice married; {not transcribed} (see Tri-) + {not transcribed} marriage: compare French trigame.]

(Botany) Having three sorts of flowers in the same head, -- male, female, and hermaphrodite, or perfect, flowers.