mellophone 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 valved brass band instrument similar to the French horn
mellophone definition by American Heritage Dictionary
A brass wind instrument, similar to the French horn, often used in military or marching bands.
Origin: mello(w) + -phone.