Definition of "gibberellin" [gibberellin]

• Any of several plant hormones, such as gibberellic acid, used to promote stem elongation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "(gibberellin-44) ,2-oxoglutarate: oxygen oxidoreductase Recommended name gibberellin-44 dioxygenase Synonyms (gibberellin-44) ,2-oxoglutarate: oxygen oxidoreductase GA44 oxidase"
• "The embryo also secretes the hormone gibberellin, which stimulates the aleurone cells to produce digestive enzymes as well."
• "The particular fungus at fault belongs to the genus Gibherella, so the compound was named gibberellin (jib'ur-el'in)."