See Also: trachy-(dictionary)

trachy- (iou)



trachy- combining form.
[In sense 1 directly from Greek trakhus rough; in sense 2 from TRACHYTE.]
Chiefly Botany. Forming nouns and adjectives with the sense 'rough', as trachycarpous, trachyspermous.
Geology. Forming names of igneous rocks with the sense 'intermediate between trachyte and', as trachybasalt, trachyrhyolite.