A parasitic trematode worm contracted from infested water that is capable of causing liver, gastrointestinal tract and bladder disease. There are three main species of these trematode worms (flukes) — Schistosoma haematobium, Schistosoma japonicum, and Schistosoma mansoni — that produce disease in humans. The larval forms of the parasite live in freshwater snails. The cercaria (form of the parasite) is liberated from the snail burrow into skin, transforms to the schistosomulum stage, and migrates to the urinary tract (S. haematobium), liver or intestine (S. japonicum, S.mansoni) where the adult worms develop. Eggs are shed into the urinary tract or the intestine and hatch to form miracidia (yet another form of the parasite) which then infect snails, completing the life cycle of the parasite. Adult schistosome worms can cause very serious tissue damage. Some schistosomes which cannot live within man nonetheless cause swimmer’s itch. Disease due to schistosomes is termed schistosomiasis or bilharzia after the shortlived German physician Theodor Bilharz (1825-1862).
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Common name for a member of the genus Schistosoma.

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schis·to·some 'shis-tə-.sōm, 'skis- n any trematode worm of the genus Schistosoma or of the family Schistosomatidae called also blood fluke
schis·to·so·mal .shis-tə-'sō-məl, .skis- adj

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schis·to·some (shisґ-) (skisґto-sōm) 1. an individual fluke of the genus Schistosoma. 2. sometimes extended to refer to any fluke of the family Schistosomatidae.

Medical dictionary. 2011.

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  • schistosome — [ ʃistozom ] n. m. • 1933; du gr. skhistos « fendu » et some ♦ Bilharzie. ● schistosome nom masculin Synonyme de bilharzie. ● schistosome (synonymes) nom masculin Synonymes : bilharzie schistos …   Encyclopédie Universelle

  • schistosome — [shis′tə sōm΄] n. [< ModL < Gr schistos, cleft (see SCHIST) + sōma, body: see SOMATIC] any of a genus (Schistosoma) of flukes that live as parasites in the blood vessels of birds and mammals, including humans …   English World dictionary

  • schistosome — noun Etymology: New Latin Schistosoma, from Greek schistos + sōma body Date: 1905 any of a genus (Schistosoma) of elongated trematode worms with the sexes separate that parasitize the blood vessels of birds and mammals and cause a destructive… …   New Collegiate Dictionary

  • schistosome dermatitis — n SWIMMER S ITCH …   Medical dictionary

  • Schistosome — Schistosoma Schistosoma …   Wikipédia en Français

  • schistosome — /shis teuh sohm /, n. 1. Also called bilharzia. any elongated trematode of the genus Schistosoma, parasitic in the blood vessels of humans and other mammals; a blood fluke. adj. 2. Also, schistosomal. pertaining to or caused by schistosomes.… …   Universalium

  • schistosome — noun Any of several tropical trematode worms, of the genus Schistosoma, that are parasitic to humans See Also: schistosomiasis …   Wiktionary

  • schistosome — (ski sto so m ) adj. Terme de tératologie. Monstres schistosomes, monstres qui présentent une éventration latérale ou médiane sur toute la longueur de l abdomen, et qui n ont pas de membres pelviens ou n en ont que de très imparfaits. ÉTYMOLOGIE… …   Dictionnaire de la Langue Française d'Émile Littré

  • schistosome — [ ʃɪstə(ʊ)ˌsəʊm] noun a parasitic flatworm which causes bilharzia in humans, infesting freshwater snails when immature and the blood vessels of birds and mammals when adult. [Genus Schistosoma.] Origin early 20th cent.: from mod. L. Schistosoma,… …   English new terms dictionary

  • schistosome — schis·to·some …   English syllables

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