What is the Latin word for astronomy?

The usual Latin words for “astronomy” are astrologia, astronomia, studium. The right choice depends on the sense; see the distinctions below.

English → Latin

“astronomy” in Latin

astrologiaastronomy; astrology astronomiaastronomy studiumstudy; eagerness, zeal; desire, fancy

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

astronomy

astrologia, astronomia (the former the classical word: the latter post-Augustan): caeli dimetiendi ratio or studium (the measuring of the heavens: ratio the science, studium the practice of it): lunaris ratio is observation of the moon, as a prognostic of the weather.

Quick answer

What is the Latin word for astronomy?: The usual Latin words for “astronomy” are astrologia, astronomia, studium. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.