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The Collaborative International Dictionary
Astrometeorology

Astrometeorology \As`tro*me`te*or*ol"o*gy\, n. [Astro- + meteorology.] The investigation of the relation between the sun, moon, and stars, and the weather. -- As`*tro*me`te*or`o*log"ic*al, a. -- As`tro*me`te*or*ol"o*gist, n.

Wiktionary
astrometeorology

n. (context astronomy meteorology English) The study of the theoretical effects of astronomical bodies and forces on the Earth’s atmosphere.

Wikipedia
Astrometeorology