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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- juvenile cell,
- juvenile court,
- juvenile delinquency,
- juvenile delinquent,
- juvenile diabetes,
- juvenile muscular atrophy,
- juvenile myoclonic epilepsy,
- juvenile officer,
- juvenile osteomalacia,
- juvenile palmo-plantar fibromatosis
Origin of juvenile hormone
First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
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