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A plant hormone promoting elongation of stems and roots
Answer for the clue "A plant hormone promoting elongation of stems and roots ", 3 letters:
iaa
Word definitions for iaa in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
indoleacetic acid \in"dole*a*cet"ic ac"id\ ([i^]n"d[=o]l), n. (Chem., Bot.) A plant hormone ( C10H9NO2 ) recognized as the principle growth regulator in higher plants; called also heteroauxin . Abbreviated IAA . Chemically it is 1H-indole-3-acetic acid.
Wikipedia
Word definitions in Wikipedia
IAA may refer to: In science and medicine Indole-3-acetic acid (plant hormone) Aux/IAA repressors, a class of early auxin responsive transcription factors in plants Insulin autoantibody , used in diagnosing Latent autoimmune diabetes Interrupted aortic ...
Usage examples of iaa.
He'd never revealed what he'd seen, not to Deymorin, or anyone else, but he had argued with Anhel iaa over the ethics of her "necessary experimentation".
Anhel iaa feared that, should we three brothers reconcile, her reign was at an end.
He remembered Nikki challenging her, and Anhel iaa trying to force Nikki to comply with her plan.