noun, genitive Hy·dri [hahy-drahy] /ˈhaɪ draɪ/. Astronomy.
the Water Snake, a southern constellation between Eridanus and Octans.
Origin of Hydrus
< Latin < Greek hýdros water serpent
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noun Latin genitive Hydri (ˈhaɪdraɪ)
a constellation near the S celestial pole lying close to Eridanus and Tucana and containing part of the Small Magellanic cloud
Word Origin for Hydrus
C17: from Latin, from Greek hudros water serpent, from hudōr water
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