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indolebutyric acid

American  
[in-dohl-byoo-tir-ik, in-] / ˈɪn doʊl byuˈtɪr ɪk, ˌɪn- /

noun

Biochemistry.

  1. a white or yellowish, crystalline, water-insoluble powder, C 12 H 13 O 2 N, a plant hormone similar to indoleacetic acid and used for the same purposes.

indolebutyric acid British  
/ ˌɪndəʊlbjuːˈtɪrɪk /

noun

  1. a synthetic auxin used for stimulating plant growth and root formation. Formula: C 12 H 13 NO 2 )

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of indolebutyric acid

First recorded in 1935–40; indole + butyric

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.