Definition of "ecdysone" [ecdysone]

• A steroid hormone produced by insects and crustaceans that promotes growth and controls molting. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Measurement of the ecdysone titre indicated that methoprene had inhibited the shift from rRNA synthesis to giant HnRNA which normally occurs in the epidermal cells during the transition from larvae to pupae."
• "This compound belongs to a new class of IGRs which are non-steroidal ecdysone agonists (Fox, 1990)."
• "D. (1986) The effect of a juvenile hormone analogue on ecdysone titre during development and HnRNA formation in the moth, Ephestia cautella."