theremin Hear it!

theremin definition

ther·emin (t̸her′ə min)

noun

an early electronic musical instrument whose tone and loudness are controlled by moving the hands through the air varying distances from two antennas

Etymology: after Leon Theremin, its Russ inventor (c. 1920)

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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