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单词 hydractinia
释义 hy·drac·tin·ia
\ˌhīˌdrakˈtinēə\ noun
Usage: capitalized
Etymology: New Latin, from hydr- + Actinia
: a genus of marine hydroids that have separate and distinctive polyps for nutritive, reproductive, and defensive functions borne on a dense encrusting coenosarc and that are commonly associated with shells containing hermit crabs
hy·drac·tin·i·an \| ̷ ̷ˌ ̷ ̷|tinēən\ adjective or noun
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