- a sign locating middle C on the third line of the staff.
Origin of alto clef
First recorded in 1875–80
Also called viola clef.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the clef that establishes middle C as being on the third line of the staffAlso called: viola clef See also C clef
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