Plural of theory
regular plural
The plural of theory is theories.
Forms of theory
| Singular | theory /ˈθɪə.ɹi/ |
|---|---|
| Plural | theories /ˈθɪəɹiz/ |
| Countable | countable and uncountable |
Theories in a sentence
- Some of the most beautiful and thus appealing physical theories, including quantum electrodynamics and quantum gravity, have been dogged for decades by infinities that erupt when theorists try to prod their calculations into new domains.2012 January, Michael Riordan, “Tackling Infinity”, in American Scientist, volume 100, number 1, archived from the original on 30 Apr 2013...
- There are two alternative theories as to why this phenomenon occurs.From the entry alternative
- His inscrutable theories would years later become the foundation of a whole new science.From the entry inscrutable
- She cites other scholars' work only insofar as it supports her own theories.From the entry insofar as
- Don't get him started on conspiracy theories, or you'll never hear the end of it!From the entry don't get someone started
Meaning of theory
- noun A description of an event or system that is considered to be accurate.
- noun A coherent statement or set of ideas that explains observed facts or phenomena and correctly predicts new facts or phenomena not previously observed, or which sets out the laws and principles of something known or observed; a hypothesis confirmed by observation, experiment etc.
- noun The underlying principles or methods of a given technical skill, art etc., as opposed to its practice.
Questions about the plural of theory
- What is the plural of theory?
- The plural of theory is theories.
- Is theory countable?
- Theory is a countable and uncountable noun.
Source and license
Adapted from Wiktionary: theory (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.
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Cite this page: “Plural of theory.” Word.ws, https://word.ws/plural/theory. Based on Wiktionary, CC BY-SA 4.0.