Definition of Hydrus in English:

Hydrus

proper noun

Astronomy
  • 1An inconspicuous southern constellation (the Water Snake), between the star Achernar and the south celestial pole.

    Compare with Hydra
    1. 1.1as genitive Hydri /-drī/ Used with a preceding letter or numeral to designate a star in the Hydrus constellation.
      ‘the star Delta Hydri’

Origin

Latin, from Greek hudros.

Pronunciation:

Hydrus

/ˈhīdrəs/