Hydra

九頭蛇 /九头蛇

Jiǔtóushé

(mythical serpent)

冥衛三 /冥卫三

Míngwèisān

(one of Pluto's moons)

海德拉

Hǎidélā

(mythical serpent)

許德拉 /许德拉

Xǔdélā

(mythical serpent)

長蛇座 /长蛇座

Chángshézuò

(constellation)

水螅

shuǐxī

(any of several small freshwater polyps of the genus Hydra and related genera)