alla breve Meaning, Definition & Usage

  1. noun a musical time signature indicating two or four half notes to a measure

WordNet

Al`la bre"ve
Etymology
It., according to the breve.
Definitions
  1. (Old Church Music) With one breve, or four minims, to measure, and sung faster like four crotchets; in quick common time; -- indicated in the time signature by .

Webster 1913