a slightly soluble crystalline plant hormone first isolated from the fungus Gibberella fujikuroi: a gibberellin. Formula: C19H22O6
Word origin
C20: from New Latin Gibberella, literally: a little hump, from Latin gibber hump + -ic
gibberellic acid in American English
(ˌdʒɪbərˈɛlɪk)
an acid, C19H22O6, isolated from various fungi and other plants, and used to increase the growth of plants and seedlings and to improve the yield of certain fruit-bearing plants