MEANING: adjective: Relating to, happening, or active at night.

ETYMOLOGY: From Latin nocturnalis (of the night), from nox (night). Earliest documented use: 1485.

NOTES: Pluto’s moon Nix is named after Nyx, the ancient Greek goddess personifying night. In Roman mythology she’s known as Nox. The Latin word for night, nox, also appears in such words as equinox (equal day and night) and noctambulation (sleepwalking).

NOCHURNAL - sorry, we're all out of butter

NOCTURINAL - gets up at night to empty the bladder

NO-TURNAL - no ueys allowed