myo- \my"o-\ A combining form of Gr. ?, ?, a muscle; as, myograph, myochrome. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Myo- \My"o-\ A combining form of Gr. ?, ?, a muscle; as, myograph, myochrome.

Source: Webster's Revised Unabridged Dictionary (1913)