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''protean'' ▫ᴱᴺ|Definition|1st|20260213210016-00-⌔

protean - Wiktionary, the free dictionary

English

Adjective

protean (comparative more protean, superlative most protean)

  • Exceedingly variable; readily assuming different shapes or forms.
    • ✤ Synonyms: multiform, polymorphic, polymorphous, shapeshifting; see also Thesaurus: multiform
    • ✤ Hyponym: pleomorphic
    • An amoeba is a protean animalcule.
    • Virus infection of the blood and bone marrow is probably responsible for all forms of the disease. The viral theory of origin accounts for the protean manifestations of the condition.1
    • […] the word’s protean expressiveness has been observed in a xeroxlore item printed in Robert Anton Wilson’s Playboy’s Book of Forbidden Words […]2
    • Nickolas Ashford and Valerie Simpson, that protean creative duo, have worn many faces and played many roles over the years.3
    • He loved to show off his protean talent.4
    • In the intervening decades she has become a protean figure, an emblem of different things to different people, depending upon their viewpoint — a visionary, a victim, a martyr, a feminist icon, a schizophrenic, a virago, a prisoner of gender — or, perhaps, a genius, as both Plath and Hughes maintained during her lifetime.5
    • In recent years, Europe has struggled to find the right balance between freedom of expression and the protean security concerns it faces.6
  • Alternative letter-case form of Protean: of or relating to Proteus.

Noun

protean (plural proteans)

  • (biochemistry) A protein that has been slightly modified by water, dilute acid, or enzymes, but not modified to the extent of a metaprotein.

Etymology

From Proteus +‎ -an, referrring to the Greek warden of sea-beasts, renowned for his ability to change shape.7

Pronunciation

  • (UK) IPA: /ˈpɹəʊ.tɪ.ən/, /pɹəʊˈtiː.ən/
  • (US) enPR: prō’ti-ən, prō-tē’ən, IPA: /ˈpɹoʊ.tɪ.ən/, /pɹoʊˈtiː.ən/
    • Homophone: (dated) protein
  • Audio (US):, Audio (US): 🔊 🔊

Printed 2026-06-28.

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Footnotes

  1. 1954 February 15, Henry E. Michelson, “The Syndrome of Lupus Erythematosus”, in Modern Medicine, volume 22, number 4, Minneapolis, Minn.: Modern Medicine Publications, Inc., page 96:

  2. 1980, Gershon Legman, The New Limerick:

  3. 1984, “Recording of Special Merit”, in Hi Fi/stereo Review, volume 49, Ziff-Davis Publishing Company, page 80:

  4. 1987, William A. Henry III, Time Magazine, volume 129:

  5. 2020 October 27, Daphne Merkin, “Shifting the Focus From Sylvia Plath’s Tragic Death to Her Brilliant Life”, in The New York Times Book Review, New York, N.Y.: The New York Times Company, →ISSN, →OCLC:

  6. 2025 January 3, The Christian Science Monitor’s Editorial Board, “The art of Poland’s diplomacy”, in The Christian Science Monitor:

  7. Douglas Harper (2001–2026), “protean”, in Online Etymology Dictionary.

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