noc·tur·nal 
(nŏk-tûrnəl)
(nŏk-tûrnəl)adj.
1. Of, relating to, or occurring in the night: nocturnal stillness.
2. Botany Opening at night. Used of flowers.
3. Zoology Most active at night: nocturnal lizards.
[Middle English, from Old French, from Late Latin nocturnālis, from Latin nocturnus, from nox, noct-, night; see nekw-t- in the Appendix of Indo-European roots.]
noc·turnal·ly adv.
- -sepalous
- separability
- separable
- separably
- separate
- separately
- separateness
- separate school
- separation
- separation anxiety
- separationist
- separatism
- separatist
- separatistic
- separative
- blow a fuse
- blow a fuse/gasket
- blow a gasket
- blow away
- blowback
- blow/break open
- blow-by-blow
- blow cool
- blow-dry
- blow dryer