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Short "hint"

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

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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.
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Tutoring comment
  • This word was used in the 2006 Scripps National Spelling Bee finals.
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