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juvenile hormone

noun, Biochemistry
1.
any of a class of insect and plant hormones acting to inhibit the molting of a juvenile insect into its adult form.
Origin
1935-1940
1935-40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for juvenile hormone

juvenile hormone

noun
1.
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
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Encyclopedia Article for juvenile hormone

a hormone in insects, secreted by glands near the brain, that controls the retention of juvenile characters in larval stages. The hormone affects the process of molting, the periodic shedding of the outer skeleton during development, and in adults it is necessary for normal egg production in females. See also thoracotropic hormone.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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