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polyp

noun

  1. any of various cnidarians, colonial or individual, having a mouth fringed with many small, slender tentacles bearing stinging cells at the top of a tubelike body, as the sea anemone or hydra
  2. a smooth projecting growth of hypertrophied mucous membrane in the nasal passages, bladder, rectum, etc.

See polyp in American Heritage Dictionary 4

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polyp

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