IPA: /ˌluːnɪˈsoʊlər/
KK: /ˈluːnɪˌsoʊlər/
Relating to both the sun and the moon.
The lunisolar calendar is based on the cycles of both the moon and the sun.
Lunisolar is formed from "luna" (from Latin, meaning moon) and "solar" (from Latin "solaris", meaning of the sun). The term lunisolar refers to phenomena that involve both the moon and the sun, particularly in relation to calendars or timekeeping.
Think of 'luna' for moon and 'solar' for sun — lunisolar describes something that involves both the moon and the sun.