deceleron Hear it!

deceleron definition

de·cel·eron (dē sel′ər än′)

noun

an aileron used to slow down an aircraft in flight; speed brake

Etymology: < decelerate + (ailer)on

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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