The condition or habit of being active at night.

Synonym of nocturnality

(of a person, creature, group, or species) Primarily active during the night. / (of an occurrence) Taking place at night, nightly.

A person or creature that is active at night. / (historical) A device for telling the time at night, rather like a sundial but read according to the stars.

plural of nocturnality

During the night / Every night.

plural of nocturnal

(Christianity) The night office of the Christian liturgy of the Hours, such as is performed in monasteries. / (Christianity) A portion of the psalter used during nocturns.

plural of nocturne

plural of nocturn