lunar
adj.adj. related to the moon. You use this to describe things that belong to the moon or are caused by it.
adj. relating to, or determined by the moon. Often describes physical features, cycles, or celestial phenomena associated with Earth's natural satellite.
The astronauts collected several lunar rocks.
The lunar cycle affects the tides of the ocean every single day.
High-resolution telescopes allow astronomers to map the lunar surface in incredible detail, revealing craters and plains that have remained unchanged for millions of years.
From Middle English lunar (“shaped like the crescent moon”), from Latin lūnāris (“of or pertaining to the moon, lunar”) (possibly through Middle French lunaire (modern French lunaire (“lunar”)), from lūna (“the Moon; crescent shape”) (ultimately from Proto-Indo-European *lewk- (“bright; to shine”)) + -is (suffix forming adjectives).
Typically used as an attributive adjective, appearing before the noun it modifies.