opisthokont

O1P3I1S1T1H4O1K5O1N1T1
UK/ɒˈpɪsθəʊ̆kɒnt/

noun

Any of very many eukaryotes, including animals and fungi, whose flagellate cells (if any) propel themselves with a single posterior flagellum.

Scrabble 20

Meanings

nounopisthokont (plural opisthokonts)

plural opisthokonts

  1. biologyAny of very many eukaryotes, including animals and fungi, whose flagellate cells (if any) propel themselves with a single posterior flagellum.

    However, these characters are only sporadically found among the various opisthokont allies (described above).

    2004, Joel Cracraft, Michael J. Donoghue, Assembling the Tree of Life, Oxford University Press (USA), →ISBN, page 68, →ISBN
    2 more examples

    Based on a single posterior flagellum (opisthokont), flattened, nondiscoid mitochondrial cristae, a chitinous exoskeleton, storage of glycogen instead of starch, lack of chloroplasts, and the code UGA for tryptophan, not chain termination, in their mitochondria, Cavalier-Smith [54] suggests a common origin of the true fungi with animalia and choanoflagellate protozoa (fig. 1).

    2002, Michael Breitenbach, Reto Crameri, Samuel B. Lehrer, Fungal Allergy and Pathogenicity, Karger Medical and Scientific Publishers, →ISBN, page 211, →ISBN

    Although the group embraces taxa that are diverse in morphology and life history, cells of undisputed opisthokonts have a single emergent flagellum which projects behind the cells while they swim. This is treated as defining the opisthokont ancestry.

    2006, Laura Katz Olson, Debashish Bhattacharya, Genomics and Evolution of Microbial Eukaryotes, Oxford University Press, →ISBN, page 13, →ISBN

Origin

  1. Ancient Greekκοντός“pole”
  2. Englishopisthokont

From opistho- + -kont (“flagellate”) from Ancient Greek κοντός (kontós, “pole”).

Full word history & related roots →

Translations

Polish opistokont
  • opistokontTranslations
Cite this entry
APA

opisthokont. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/opisthokont

MLA

“opisthokont.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/opisthokont. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “opisthokont,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/opisthokont.

Source: opisthokont on Wiktionary, CC BY-SA 4.0.