[1] : The Collaborative International Dictionary of English v.0.48

harmonium \harmo"nium\ haumrm=o"ni^u^m, n. nl.
   see harmony. 
   a musical instrument, resembling a small organ and especially
   designed for church music, in which the tones are produced by
   forcing air by means of a bellows so as to cause the
   vibration of free metallic reeds. it is now made with one or
   two keyboards, and has pedals and stops.
   1913 webster
see also:
harmony 

[2] : WordNet (r) 2.0

harmonium
     n : a free-reed instrument in which air is forced through the
         reeds by bellows syn: organ, reed organ
see also:
organ reed organ 

[3] : Moby Thesaurus II by Grady Ward, 1.0

21 moby thesaurus words for "harmonium":
   hammond organ, baroque organ, calliope, calliophone, choralcelo,
   electric organ, electro-pneumatic organ, hydraulic organ, melodeon,
   melodica, orchestrelle, organ, organophone, pipe organ, reed organ,
   seraphine, steam organ, symphonion, tracker-action organ,
   tubular-pneumatic organ, vocalion

Harmonium >> H Words
Harmonium, definition of term: Harmonium
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