Definition of ecdysone in English:

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Pronunciation: /ˈɛkdɪsəʊn/
Pronunciation: /ɛkˈdʌɪsəʊn/


[mass noun] Biochemistry
A steroid hormone that controls moulting in insects and other arthropods.
Example sentences
  • This checkpoint may be controlled by signaling through the steroid hormone ecdysone.
  • Larval molting in Drosophila, as in other insects, is initiated by the coordinated release of the steroid hormone ecdysone, in response to neural signals, at precise stages during development.
  • A pulse of the steroid hormone ecdysone at the onset of metamorphosis triggers the rapid transformation of a flat leg imaginal disc into an immature adult leg, largely through coordinated changes in cell shape.


1950s: from Greek ekdusis 'shedding' + -one.

For editors and proofreaders

Line breaks: ec¦dys|one

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