Definition of interlunar
: relating to the interval between old and new moon when the moon is invisible
Origin and Etymology of interlunar
probably from Medieval French interlunaire, from Latin interlunium interlunar period, from inter- + luna moon — more at lunar
First Known Use: 1598
Learn More about interlunar
Seen and Heard
What made you want to look up interlunar? Please tell us where you read or heard it (including the quote, if possible).