trematodeadj.n.
/ˈtrɛmətəʊd/, /ˈtriːmətəʊd/, U.S. /ˈtrɛməˌtoʊd/, /ˈtriməˌtoʊd/ Zoology.
A. adj.
Belonging to the class or order Trematoda or Trematoidea of parasitic worms, found in the bodies of various animals, having a flattish or cylindrical form, with skin often perforated by pores, and usually furnished with adhesive suckers; the flukes (fluke n.1 2) are typical examples. In Cuvier's classification the Trematoda constituted the second family of parenchymatous entozoa, containing besides the flukes some animals not now reckoned as trematodes.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Platyhelminthes > [adjective] > belonging to class Trematode
trematode1836
1836–9 Todd's Cycl. Anat. & Physiol. II. 121/1 The Trematode Order..includes only two species infesting the human body.
1864 Reader 3 Dec. 712/1 He had discovered upon the angel-fish (Squatina angelus) a trematode worm of very singular organization, which will constitute a new genus.
1867 J. Hogg Microscope (ed. 6) ii. iii. 567 One of the most remarkable of the Trematode helminths is Bilharzia haematobia of Cobbold.
1876 P. J. Van Beneden Animal Parasites & Messmates Introd. Cestode and trematode worms.
B. n.
A trematode worm.
ΘΚΠ
the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Platyhelminthes > [noun] > class Trematodes > member of
fluke1668
plaicea1722
gourd-worm1756
weevil1789
trematode1859
bloodworm1872
1859 T. S. Cobbold in Trans. Linn. Soc. 22 iv. 364 Bilharzia magna (mihi)... Up to the time of Bilharz's discovery of Distoma hæmatobium, all the flukes were considered hermaphrodite... Trematodes possessing so marked a structural peculiarity as D. hæmatobium..deserve, I think, to be generically separated from Distomata properly so called, and I have therefore employed the indefatigable discoverer's name for this purpose.
1876 J. Van Duyn & E. C. Seguin tr. E. L. Wagner Man. Gen. Pathol. 120 Trematodes are parasitic solitary flat-worms with inarticulate leaf-shaped bodies.
1877 T. H. Huxley Man. Anat. Invertebr. Animals 202 Diœcious Trematodes are very rare, the most important being the formidable Bilharzia.
1904 Brit. Med. Jrnl. 17 Sept. 663 Sections of a minute adult trematode.
1905 Q. Rev. Apr. 488 The pearls in our fresh water mussel were formed by the larvae of a fluke (a trematode).
1962 J. D. Smyth Introd. Animal Parasitol. xiii. 138 The great majority of digenetic trematodes are inhabitants of the vertebrate alimentary canal or its associated organs.
Derivatives
ˈtrematoid adj. and n.
ΚΠ
1882 Ogilvie's Imperial Dict. (new ed.) Trematode, Trematoid, a.
1891 Cent. Dict. Trematoid, a. and n.
This entry has not yet been fully updated (first published 1914; most recently modified version published online June 2022).
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adj.n.1836