ἡμι-τόνιον,τό,
A. semitone, Philol. 6 , Aristox. Harm. p.21 M., al., D.H. Comp. 11 , Arr. Epict. 2.11.2 , etc.
II. half the skeinorbundle of gutin a torsionengine, Ph. Bel. 68.46 , Hero Aut. 2.6 .
2. one of the two frames containing the τόνοςin such an engine, Id. Bel. 90.4 .