countertheorem

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noun

A theorem formulated in opposition to another.

Scrabble 21
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Meanings

nouncountertheorem (plural countertheorems)

plural countertheorems

  1. A theorem formulated in opposition to another.

    William Smith's demonstration that similar fossils identify the same formation at different places induced the countertheorem that different fossils indicate formations of different ages.

    1960, James Marvin Weller, Stratigraphic Principles and Practice, page 480

Origin

From counter- + theorem.

Full word history & related roots →
Cite this entry
APA

countertheorem. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/countertheorem

MLA

“countertheorem.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/countertheorem. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “countertheorem,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/countertheorem.

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