tautonym

English

Etymology

taut- +‎ -onym

Noun

tautonym (plural tautonyms)

  1. (biology) A binomial name consisting of the same word twice, such as Bison bison.
    • 2013 August 14, “Is oxeye daisy a Leucanthemum or a Chrysanthemum?”, in Botanical Accuracy‎:
      And that would mean a species named Leucanthemum leucanthemum, with the genus and species epithet the same (a tautonym), which is a total no-no in botany.
  2. (linguistics) A word or term made from two identical parts or syllables, such as bonbon or dada.
  3. An absolute synonym.

Synonyms

See also
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