As"ca*rid (#), n.; pl. Ascarides (#) or Ascarids. [NL. ascaris, fr. Gr. .] Zool.
A parasitic nematoid worm, espec. the roundworm, Ascaris lumbricoides, often occurring in the human intestine and allied species found in domestic animals; also commonly applied to the pinworm (Oxyuris), often troublesome to children and aged persons.
© Webster 1913.