• WordNet 3.6
    • n bombardon a large shawm; the bass member of the shawm family
    • n bombardon a tuba that coils over the shoulder of the musician
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Webster's Revised Unabridged Dictionary
    • n Bombardon (Mus) Originally, a deep-toned instrument of the oboe or bassoon family; thence, a bass reed stop on the organ. The name bombardon is now given to a brass instrument, the lowest of the saxhorns, in tone resembling the ophicleide.
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Century Dictionary and Cyclopedia
    • n bombardon A large-sized musical instrument of the trumpet kind, in tone not unlike the ophicleide. Its compass generally is from F on the fourth ledger-line below the bass staff to the lower D of the treble staff. It is not capable of rapid execution.
    • n bombardon The lowest of the sax-horns.
    • n bombardon Formerly, a bass reed-stop of the organ.
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Chambers's Twentieth Century Dictionary
    • Bombardon a deep-toned brass instrument, with a tube likened to a bombard
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Webster's Revised Unabridged Dictionary
It. bombardo,
Chambers's Twentieth Century Dictionary
Fr. bombe—L. bombus—Gr. bombos, a humming sound—an imitative word.


In literature:

The bombardon, or E flat tuba, has much richer lower notes.
"Scientific American Supplement No. 819" by Various
You learn to play the bombardon, and I'll be bound to say that it will pull you down.
"The Queen's Scarlet" by George Manville Fenn
The bombardons possess a chromatic compass of 3-1/2 to 4 octaves.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2" by Various