harmonium[här mō′nē əm]
harmonium definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a small kind of reed organ
Origin: Fr: so named by A. F. Debain (1809-77), French organ maker ; from harmonie, harmony
harmonium definition by American Heritage Dictionary
An organlike keyboard instrument that produces tones with free metal reeds actuated by air forced from a bellows.
Origin: French, from harmonie, harmony, from Old French armonie, harmonie; see harmony.