"Any of a group of plant hormones that stimulate stem elongation, germination, and flowering", 1930s: from modern LatinGibberella (from Gibberella fujikuroi, the fungus from which one of the gibberellins was first extracted), diminutive of the genus name Gibbera, from Latingibber 'hump', + -in1.[gibberellin etymology, gibberellin origin, 英语词源]