from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. a musical instrument in which the sound is produced by flames of gas in tubes of different length
from the GNU version of the Collaborative International Dictionary of English
- n. A musical instrument in which the tones are produced by flames of hydrogen, or illuminating gas, burning in tubes of different sizes and lengths.
from The Century Dictionary and Cyclopedia
- n. A musical instrument in which the tones are produced by means of burning jets of hydrogen inclosed in graduated glass tubes. It was invented about 1875 by Frederic Kastner. Sometimes called chemical harmonicon.
pyro- + -phone (Wiktionary)
See also his pyrophone, which I still think is his coolest creation aside from perhaps GuitarBot