Definition of arsis
plural arses play \-ˌsēz\
1 a : the lighter or shorter part of a poetic foot especially in quantitative verse b : the accented or longer part of a poetic foot especially in accentual verse
2 : the unaccented part of a musical measure — compare thesis
Origin of arsis
Late Latin & Greek; Late Latin, raising of the voice, accented part of foot, from Greek, upbeat, less important part of foot, literally, act of lifting, from aeirein, airein to lift
First Known Use: 14th century
Learn More about arsis
Britannica.com: Encyclopedia article about "arsis"
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