A·plys·i·a n. Zool. A genus of marine mollusks of the order Tectibranchiata; the sea hare. Some of the species when disturbed throw out a deep purple liquor, which colors the water to some distance. See Illust. in Appendix.
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Aplysia
n : type genus of the family Aplysiidae [syn: genus Aplysia, Tethys,
genus Tethus]