fluke vs trematode what difference

what is difference between fluke and trematode



  • (UK) enPR: flo͞ok IPA(key): /fluːk/
  • (US) enPR: flo͞ok IPA(key): /fluk/
  • (obsolete) enPR: flyo͞ok IPA(key): /fljuːk/
  • Rhymes: -uːk

Etymology 1

Of uncertain or obscure origin, perhaps dialectal. It seems to have originally referred to a lucky shot at billiards. Possibly connected to sense 3, referring to whales’ use of flukes to move rapidly.


fluke (plural flukes)

  1. A lucky or improbable occurrence, with the implication that the occurrence could not be repeated.


  • glitch


fluke (third-person singular simple present flukes, present participle fluking, simple past and past participle fluked)

  1. To obtain a successful outcome by pure chance.
  2. (snooker) To fortuitously pot a ball in an unintended way.

Related terms

Etymology 2

From Old English flōc (flatfish), of Germanic origin, related to German flach (flat), Old Norse floke (flatfish), all ultimately from Proto-Germanic *flakaz.


fluke (plural flukes)

  1. A flounder.
  2. A trematode; a parasitic flatworm of the Trematoda class, related to the tapeworm.
Derived terms
  • Gulf fluke (Paralichthys albiguttus)
  • long fluke (Hippoglossoides limandoides)
  • pole fluke (Glyptocephalus cynoglossus)
  • sail fluke (Lepidorhombus whiffiagonis)
  • sand fluke (Microstomus microcephalus, Hippoglossoides platessoides)
  • American fluke (Fascioloides magna)
  • bile fluke
  • blood fluke
  • bladder fluke
  • cat liver fluke
  • cecal fluke (Postharmostomum gallinum)
  • Chinese liver fluke (Clonorchis sinensis, syn. Opisthorchis sinensis)
  • deer fluke (Fascioloides magna)
  • eye fluke
  • flukeworm
  • giant intestinal fluke (Fasciolopsis buski)
  • giant liver fluke (Fascioloides magna)
  • lancet fluke, lancet liver fluke (Dicrocoelium dendriticum)
  • liver fluke
  • lung fluke (Paragonimus spp.)

Etymology 3

Possibly as Etymology 2 or from Middle Low German flügel (wing), from Old High German vlügel, from Proto-Germanic *flugilaz (wing).


fluke (plural flukes)

  1. Either of the two lobes of a whale’s or similar creature’s tail.
  2. (nautical) Any of the triangular blades at the end of an anchor, designed to catch the ground.
  3. A metal hook on the head of certain staff weapons (such as a bill), made in various forms depending on function, whether used for grappling or to penetrate armour when swung at an opponent.
  4. In general, a winglike formation on a central piece.
  5. Waste cotton.
Derived terms
  • turn flukes

Further reading

  • fluke on Wikipedia.Wikipedia
  • summer flounder on Wikipedia.Wikipedia
  • trematoda on Wikipedia.Wikipedia
  • James Orchard Halliwell (1846), “FLUKE”, in A Dictionary of Archaic and Provincial Words, Obsolete Phrases, Proverbs, and Ancient Customs, from the Fourteenth Century. […] In Two Volumes, volume I (A–I), London: John Russell Smith, [], OCLC 1008510154, page 365, column 2.
  • Douglas Harper (2001–2021), “fluke”, in Online Etymology Dictionary.



From translingual Trematoda, from Ancient Greek τρημᾰτώδης (trēmatṓdēs, having a vent to the intestinal canal), from τρῆμᾰ (trêma, perforation, aperture) +‎ -ώδης (-ṓdēs, full of, -like).


  • (Received Pronunciation) IPA(key): /ˈtrɛm.ə.təʊd/
  • (General American) IPA(key): /ˈtrɛm.əˌtoʊd/


trematode (plural trematodes)

  1. (zoology) a parasitic flatworm of the class Trematoda
    Synonyms: fluke, trematode worm



  • “trematode”, in Lexico, Dictionary.com; Oxford University Press, 2019–present.
  • “trematode”, in Merriam–Webster Online Dictionary.
  • “trematode”, in The American Heritage Dictionary of the English Language, 5th edition, Boston, Mass.: Houghton Mifflin Harcourt, 2016, →ISBN.

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