juvenile hormone
noun
: an insect hormone that is secreted by the corpora allata, inhibits maturation to the imago, and plays a role in reproduction
Examples of juvenile hormone in a Sentence
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Because the juvenile hormone is known to regulate metamorphosis in insects, the finding could mean that some of the molecular mechanisms controlling the process evolved in a common ancestor of worms and insects.
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Byelizabeth Pennisi, science.org, 17 Jan. 2023
Around the time the worm’s larva began its transformation, many cells started to produce an enzyme that, in insects, helps activate a molecule called juvenile hormone.
—Byelizabeth Pennisi, science.org, 17 Jan. 2023
And the females had very high levels of one particular hormone (called juvenile hormone III) in their bodies.
—Elizabeth Preston, Discover Magazine, 10 June 2016
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Byelizabeth Pennisi, science.org, 17 Jan. 2023
Around the time the worm’s larva began its transformation, many cells started to produce an enzyme that, in insects, helps activate a molecule called juvenile hormone.
—Byelizabeth Pennisi, science.org, 17 Jan. 2023
And the females had very high levels of one particular hormone (called juvenile hormone III) in their bodies.
—Elizabeth Preston, Discover Magazine, 10 June 2016
Cite this Entry
“Juvenile hormone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/juvenile%20hormone. Accessed 8 Jul. 2025.
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