lunisolar adjective. [lu:nɪ'sǝʊlǝ] L17.
[from Latin LUNA moon + -I- + SOLAR adjective¹.]
Astronomy. Of or pertaining to the mutual relations of the sun and moon; resulting from the combined action of the sun and moon.
lunisolar period a cycle of 532 years, containing a whole number of both lunar cycles and solar cycles. lunisolar precession: see PRECESSION 2a. lunisolar year: with divisions regulated by phases of the moon and an average length made to agree with the solar year.

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