myonymy

myo- +‎ -onymy

myonymy (uncountable)

1. Nomenclature of the muscles.
   • 1885, Journal of Nervous and Mental Disease, page 271:

     Chaussier's idea that the name of each muscle, for example, should accurately indicate all its relations, led him to frame a myonymy which is not only inapplicable to the same parts in many animals, but so ponderous as to be useless ;