juvenile hormone

American  

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.

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juvenile hormone British  

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

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Etymology

Origin of juvenile hormone

First recorded in 1935–40

Example Sentences

See Examples For:

juvenile hormone

Without Jhe to break it down, more juvenile hormone was reaching the brains of these ants, and “soldier behavior was reprogrammed to forager behavior,” Ju says.

From Science Magazine ● Sep. 14, 2023

“It shows that the traffic of juvenile hormone is probably very, very important,” she says.

From Science Magazine ● Sep. 14, 2023

The discovery of the juvenile hormone was particularly unexpected.

From Science Magazine ● Nov. 29, 2016

California's Georghiou has found, in laboratory tests, that after 15 generations both houseflies and mosquitoes develop resistance to juvenile hormone insecticides.

From Time Magazine Archive

Zoecon Corp. of Palo Alto, Calif., has just started marketing a compound called Altosid SR-10, which is chemically similar to the juvenile hormone secreted by insects during an early stage of development.

From Time Magazine Archive