any of a class of insect and plant hormones acting to inhibit the molting of a juvenile insect into its adult form.
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Mississippi’s nickname comes from the magnificent trees that grow there. What is it?
Origin of juvenile hormone
First recorded in 1935–40
Words nearby juvenile hormone
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for juvenile hormone
a hormone, secreted by insects from a pair of glands behind the brain, that promotes the growth of larval characteristics and inhibits metamorphosis
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