vespertinal

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ves·per·tine

V0075400 (vĕs′pər-tīn′) also ves·per·ti·nal (vĕs′pər-tī′nəl)adj.1. Of, relating to, or occurring in the evening.2. Botany Opening or blooming in the evening.3. Zoology Active in the evening.
[Latin vespertīnus, from vesper, evening; see vesper.]