Webster dictionary was developed by Noah Webster in the beginning of 19th century. On this website, you can find definition for nocturnal from the 1913 edition of Webster's Revised Unabridged Dictionary. Define nocturnal using one of the most comprehensive free online dictionaries on the web.

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Part of Speech: Noun
Results: 3
1. Having a habit of seeking food or moving about at night; as, nocturnal birds and insects.
2. Of, pertaining to, done or occuring in, the night; as, nocturnal darkness, cries, expedition, etc.; - opposed to diurnal.
Part of Speech: noun
Examples of usage:
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