any one of a number of little musical periods, like the semitone
within the Pythagorean system of music, small half-step or semitone, being the remnant of an ideal 4th after subtracting from this two whole measures or “tones”: . A limma and an apotome together made a “tone”: . Also known as Pythagorean semitone or hemitone.
In prosody, a monosemic bare time or pause; an occasion corresponding to one mora or semeion, current inside rhythm, yet not expressed by a syllable within the terms.