Hydrus

noun

astronomy

: a small southern constellation that is visible between the constellations of Tucana and Mensa and that is represented by the figure of a snake

… a small constellation in the southern sky called Hydrus, which means "male water snake."

—Jesse Eisinger and Jake Bernstein, Knoxville (Tennessee) News-Sentinel, 18 Apr. 2010

Word History

First Known Use

1675, in the meaning defined above

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