单词 | polyp |
释义 | polyp/ˈpɒlɪp /noun 1 Zoology A solitary or colonial sedentary form of a coelenterate such as a sea anemone, typically having a columnar body with the mouth uppermost surrounded by a ring of tentacles. In some species, polyps are a phase in the life cycle which alternates with a medusoid phase. Compare with medusa.A few, such as Hydra, are solitary polyps that lack a medusoid stage....
2 Medicine A small growth, usually benign and with a stalk, protruding from a mucous membrane.The laser can also provide relief for symptoms caused by benign airway tumors such as hamartomas, papillomas, polyps, and angiomas....
Derivativespolypous
OriginLate Middle English (in sense 2): from Old French polipe, from Latin polypus (see polypus). sense 1 dates from the mid 18th century. |
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