Main Entry: lu·nar

Pronunciation: \ˈlü-nər also -ˌnär\

Function: adjective

Etymology: Middle English, from Latin lunaris, from luna moon; akin to Latin lucēre to shine — more at light

Date: 15th century

1 : crescent, lunate
2 a : of, relating to, or resembling the moon <lunar craters> <a lunar landscape> b : designed for use on the moon <lunar vehicles>
3 : measured by the moon's revolution <lunar month>