nocturn

noun
noc·​turn | \ ˈnäk-ˌtərn How to pronounce nocturn (audio) \

Definition of nocturn

: a principal division of the office of matins

First Known Use of nocturn

14th century, in the meaning defined above

History and Etymology for nocturn

Middle English nocturne, borrowed from Anglo-French, borrowed from Medieval Latin nocturnus, going back to Latin, feminine of nocturnus "of the night" — more at nocturnal

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