/ Dictionary / Index F form genus: Meaning and Definition of Find definitions for: form' ge"nus Pronunciation: [key] — Biol. Biol. an artificial taxonomic category including species, esp. of fossil forms, grouped together on the basis of morphological resemblance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. formful formic Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language