from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of the three canonical divisions of the office of matins.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The night office of the Christian Liturgy of the Hours, such as is performed in christian monasteries.
from the GNU version of the Collaborative International Dictionary of English
- n. An office of devotion, or act of religious service, by night.
- n. One of the portions into which the Psalter was divided, each consisting of nine psalms, designed to be used at a night service.
from The Century Dictionary and Cyclopedia
- Of the night; nightly.
- n. In the early Christian ch., one of several services recited at midnight or between midnight and dawn, and consisting chiefly of psalms and prayers.
- n. The part of the psalter used at nocturns, or the division used at each nocturn.
- n. Same as nocturne, 1.
- n. An organism whose color is different at night from what it is in the daytime. Also nocturne.
- To be different in color at night from what it is in the daytime; be a nocturn. Also nocturne.
Middle English nocturne, from Medieval Latin nocturna, from Latin, feminine of nocturnus, of the night; see nocturnal.(American Heritage® Dictionary of the English Language, Fourth Edition)