'gibberellin' definitions:
Definition of 'gibberellin'
(from WordNet)
noun
A plant hormone isolated from a fungus; used in promoting plant growth
Definition of 'gibberellin'
From: GCIDE
- gibberellin \gibberellin\ n. (Chem.), Any of a number plant growth hormones, the first of which was isolated in 1938 from the fungus Gibberella fujikuroi; more than 60 related gibberelins are known. The most important is gibberellin A3, also called gibberellic acid. They are used in agriculture for promoting plant growth. [WordNet 1.5 +PJC]