/ Dictionary / Index G gibberellic acid: Meaning and Definition of Find definitions for: gib'ber•el'lic ac'id Pronunciation: (jib'u-rel'ik, jib"-), [key] a gibberellin CHOCOOH, produced as a metabolite by the fungus Gibberella fujikuroi, used as a stimulator of plant growth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gibber gibberellin Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language