ARSIS
- the lighter or shorter part of a poetic foot especially in quantitative verse
- the upward stroke in conducting; upbeat
- a. the part of a metrical foot that bears the ictus or stress b. (less commonly) a part of a metrical foot that does not bear the ictus
- the unaccented part of a musical measure [n ARSES]
- an up-beat [n ARSES]