lunar
Adjective
- Of, pertaining to, or resembling the Moon (that is, Luna, the Earth's moon).
- Shaped like a crescent moon; lunate.
Noun
- The middle bone of the proximal series of the carpus in the wrist, which is shaped like a half-moon.
- An observation of a lunar distance (“the angle between the Moon and another celestial body”), especially for establishing the longitude of a ship at sea.