Open Dictionary
mouse here to listen, click to choose/add more
Location: USA
Source: Learn That Word
Profile URL:

Are you a native English speaker? How do you pronounce this word?

Thank you for contributing!
upload mp3 file or record now it's easy, promised!

{%type%} Definitions

WordNet 3.0Copyright Princeton University


Short "hint"

n.- Any of several arthropod hormones that in insects are produced by the prothoracic gland and that trigger molting and metamorphosis.

Usage examples (17)
  • EL-SEBAKHY, N. BLESSIN.TON. B. and ASAAD, A. (1979) A C28 ecdysone-like substance from juga iva.
  • This compound belongs to a new class of IGRs which are non-steroidal ecdysone agonists (Fox, 1990).
  • This gland apparently produces a hormone named ecdysone (ek'dih-sohn), which is stored in a small organ near the heart.
  • D. (1986) The effect of a juvenile hormone analogue on ecdysone titre during development and HnRNA formation in the moth, Ephestia cautella. for more
Tutoring comment
  • This word was used in the 2006 Scripps National Spelling Bee finals.
add more
The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google,,, and YouTube,,,,, as well as the generous Creative Commons community.