a marching or military band brass instrument similar in appearance and range to the French horn but slightly smaller and simpler to play.
Origin of mellophone
Also called tenor cor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
music a brass band instrument similar in tone to a French horn
Word Origin for mellophone
C20: from mellow + -phone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012