Definition of Monoceros in US English:

Monoceros

proper noun

Astronomy
  • 1An inconspicuous constellation (the Unicorn), lying on the celestial equator in the Milky Way between Canis Major and Canis Minor.

    1. 1.1as genitive Monocerotis /məˌnäsəˈrōtis, ˌmänəsə-/ Used with preceding letter or numeral to designate a star in the constellation Monoceros.
      ‘the star Alpha Monocerotis’

Origin

Via Latin from Greek.

Pronunciation

Monoceros

/məˈnäsərəs/