one of a group of organic compounds, secreted by an ascomycetous fungus (Gibberella fujikuroi), which behave like plant hormones in stimulating seed germination, growth of roots, leaves, and stems, etc.
Origin of gibberellin; from Modern Latin Gibberella (dim. of Classical Latin gibber, hump on the back ; from gibbus: see gib) + -in
Any of several plant hormones, such as gibberellic acid, that stimulate stem elongation, seed germination, and other physiological processes.
Origin of gibberellinFrom New Latin Gibberella (fujikoroī), the fungus from which a gibberellin was first isolated, from Latin gibberella, feminine diminutive of gibber, hump (from the humplike shape of the genus's perithecia).