Word Study
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pinworm
CIDE DICTIONARY
pinworm, n.
A small nematoid worm (Oxyurus vermicularis ), which is parasitic chiefly in the rectum of man. It is most common in children and aged persons. [1913 Webster]
OXFORD DICTIONARY
pinworm, n. a small parasitic nematode worm, Enterobius vermicularis, of which the female has a pointed tail.
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