Word Study
tacet
CIDE DICTIONARY
tacet, v. impers. [L., it is silent, 3d pers.pr. of tacere to be silent.].
It is silent; -- a direction for a vocal or instrumental part to be silent during a whole movement. [1913 Webster]
OXFORD DICTIONARY
tacet, v.intr. Mus. an instruction for a particular voice or instrument to be silent.
Etymology
L, = is silent
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