lunisolar

• POS: Adjective
• HYPHEN: lu=ni=so=lar

CIDE DICTIONARY

lunisolar, a. [L. luna moon + E. solar: cf. F. lunisolaire.].

 Resulting from the united action, or pertaining to the mutual relations, of the sun and moon.  [1913 Webster]

Lunisolar precession (Astron.), that portion of the annual precession of the equinoxes which depends on the joint action of the sun and moon. -- Lunisolar year, a period of time, at the end of which, in the Julian calendar, the new and full moons and the eclipses recur on the same days of the week and month and year as in the previous period. It consists of 532 common years, being the least common multiple of the numbers of years in the cycle of the sun and the cycle of the moon.

OXFORD DICTIONARY

lunisolar, adj. of or concerning the sun and moon.

Idiom

lunisolar period a period of 532 years between the repetitions of both solar and lunar cycles. lunisolar year a year with divisions regulated by changes of the moon and an average length made to agree with the solar year.

Etymology

L luna moon + sol sun