What is "ascaris lumbricoides"

Ascarid \As"ca*rid\, n.; pl. Ascaridesor Ascarids. [NL. ascaris, fr. Gr. ?.] (Zo["o]l.) A parasitic nematoid worm, especially 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.

Mawworm \Maw"worm`\, n. [Maw the belly + worm.] (Zo["o]l.)

1. Any intestinal worm found in the stomach, esp. the common round worm ( Ascaris lumbricoides), and allied species.

2. One of the larv[ae] of botflies of horses; a bot.

Stomach \Stom"ach\, n. [OE. stomak, F. estomac, L. stomachus, fr. Gr. sto`machos stomach, throat, gullet, fr. sto`ma a mouth, any outlet or entrance.]

1. (Anat.) An enlargement, or series of enlargements, in the anterior part of the alimentary canal, in which food is digested; any cavity in which digestion takes place in an animal; a digestive cavity. See Digestion, and Gastric juice, under Gastric.

2. The desire for food caused by hunger; appetite; as, a good stomach for roast beef.
   --Shak.

3. Hence appetite in general; inclination; desire.

   He which hath no stomach to this fight, Let him depart.
   --Shak.

4. Violence of temper; anger; sullenness; resentment; willful obstinacy; stubbornness. [Obs.]

   Stern was his look, and full of stomach vain.
   --Spenser.

   This sort of crying proceeding from pride, obstinacy, and stomach, the will, where the fault lies, must be bent.
   --Locke.

5. Pride; haughtiness; arrogance. [Obs.]

   He was a man Of an unbounded stomach.
   --Shak.

   Stomach pump (Med.), a small pump or syringe with a flexible tube, for drawing liquids from the stomach, or for injecting them into it.

   Stomach tube (Med.), a long flexible tube for introduction into the stomach.

   Stomach worm (Zo["o]l.), the common roundworm ( Ascaris lumbricoides) found in the human intestine, and rarely in the stomach.

Ascaris lumbricoides is the small roundworm of humans, growing to a length of up to . It is one of several species of Ascaris. An ascarid nematode of the phylum Nematoda, it is the most common parasitic worm in humans. This organism is responsible for the disease ascariasis, a type of helminthiasis and one of the group of neglected tropical diseases. An estimated one-sixth of the human population is infected by A. lumbricoides or another roundworm. Ascariasis is prevalent worldwide, especially in tropical and subtropical countries.