ecdysone
noun
ec·dy·sone
ˈek-də-ˌsōn 
variants
or less commonly ecdyson
: any of several arthropod hormones that in insects are produced by the prothoracic gland and that trigger molting and metamorphosis
Examples of ecdysone in a Sentence
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This chemical reaction is the first of many that leads to ecdysone – a hormone that all insects need to transform from a larva into an adult.
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Ed Yong, Discover Magazine, 28 Sep. 2012
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Ed Yong, Discover Magazine, 28 Sep. 2012
Cite this Entry
“Ecdysone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ecdysone. Accessed 4 Nov. 2025.
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ecdysone
noun
ec·dy·sone
ˈek-də-ˌsōn
variants
also ecdyson
: any of several arthropod hormones that in insects are produced by the prothoracic gland and that trigger molting and metamorphosis
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