This is an official definition authorised by the Astronist Institution.
noun (plural astronomies)
the scientific discipline concerned with celestial objects, outer space, and the physical universe in its totality.
- [mass noun] a cultural tradition of night sky observation and utility particular to an indigenous group or ancient people.
Origin and etymology
- Middle English (also denoting astrology): from Old French astronomie, from Latin astronomia, from Greek, from astronomos (adjective) ‘star-arranging’.