theorize

verb

the·​o·​rize ˈthē-ə-ˌrīz How to pronounce theorize (audio)
ˈthir-ˌīz
theorized; theorizing

transitive verb

1
: to form a theory about
2
: to propose as a theory
theorization noun
theorizer noun

Examples of theorize in a Sentence

Many scientists have theorized about the possibility of life on other planets.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Astronomers have long theorized that two orbiting white dwarfs are the root of most type 1a supernova explosions. Paul Smaglik, Discover Magazine, 4 Apr. 2025 This could mean a ski-centric season would be in the works, something many social media users have theorized about. Marni Rose McFall, MSNBC Newsweek, 4 Apr. 2025 While many fans and members of the press chose to ignore them, others started theorizing about potential updates on Marvel’s packed theatrical slate. Fran Ruiz, Space.com, 26 Mar. 2025 Researchers theorized that the synthetic gums would shed more microplastics, according to lead author Lisa Lowe, a PhD student who started the project as an undergraduate intern at UCLA. Emily Kay Votruba, EverydayHealth.com, 25 Mar. 2025 See All Example Sentences for theorize

Word History

First Known Use

1644, in the meaning defined at transitive sense 1

Time Traveler
The first known use of theorize was in 1644

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Cite this Entry

“Theorize.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/theorize. Accessed 9 Apr. 2025.

Kids Definition

theorize

verb
the·​o·​rize ˈthē-ə-ˌrīz How to pronounce theorize (audio)
theorized; theorizing
: to form a theory : speculate
theorizer noun

More from Merriam-Webster on theorize

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