Pro*la"tion (?), n. [L. prolatio:
cf. F. prolation.]
1. The act of prolating or pronouncing;
utterance; pronunciation. [Obs.] Ray.
2. The act of deferring; delay. [Obs.]
Ainsworth.
3. (Mus.) A mediæval method of
determining of the proportionate duration of semibreves and
minims. Busby.