An inconspicuous constellation (the Unicorn), lying on the celestial equator in the Milky Way between Canis Major and Canis Minor.
postpositive Used with preceding Greek letter or numeral to designate a star in the constellation Monoceros.
- ‘the star Alpha Monocerotis’
Via Latin from Greek. Monocerotis is the Latin genitive form of Monoceros.