the·o·rize | \ˈthē-ə-ˌrīz, ˈthir-ˌīz\
theorized; theorizing

Definition of theorize 

transitive verb

1 : to form a theory about

2 : to propose as a theory

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Other Words from theorize

theorization \ˌthē-ə-rə-ˈzā-shən, ˌthir-ə- \ 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

Rhodes is not yet sure why these reversions occur, but theorizes that the commitment to becoming female may be irreversible—and thus a risk only worth taking when all conditions are exactly right. Katherine J. Wu, Smithsonian, "Alternatives to Heterosexual Pairings, Brought to You By Non-Human Animals," 28 June 2018 Scientists who spoke with Michigan Live on Wednesday, also theorized that meteor was large. Sarah Gray, Fortune, "Watch a Meteor Explode Over Michigan, Causing Loud Boom and Brilliant Flash of Light," 17 Jan. 2018 Some attribute the rise in the body’s core temperature, while others theorize there are thermosensors lining the mouth and throat that may trigger additional sweating. Anna Thomas Bates, Milwaukee Journal Sentinel, "On a hot day, this quinoa salad can cool you down - without overheating your kitchen," 11 July 2018 Tagert theorized players at the top of the pay structure would be most affected. Michael Osipoff, Post-Tribune, "'Save America's Pastime Act' would force RailCats to evaluate salary structure," 10 Apr. 2018 Margot, Green theorized, erred because he was focused on trying to get the ball quickly for a possible throw to third. Kevin Acee,, "Things fall apart quickly for Padres in loss to Cubs," 13 July 2018 Flyvbjerg theorized that some important elements of risk were not being calculated into the original planning of many projects around the world. John Gallagher, Detroit Free Press, "Here's why Detroit development takes so long," 11 July 2018 The scientists theorize that the poison paint was used to protect the books from insects and vermin. Amanda Erickson, Washington Post, "Three poisonous books were found in University of Southern Denmark’s library," 10 July 2018 Linton theorized the clear water came about because Subtropical Storm Alberto in late May moved counterclockwise up the Mississippi River’s east side, directing the river’s drainage to the east. Jose R. Gonzalez, Houston Chronicle, "Galveston’s blue water was a boon for island business," 6 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'theorize.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of theorize

1638, in the meaning defined at intransitive sense

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Statistics for theorize

Last Updated

17 Oct 2018

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Time Traveler for theorize

The first known use of theorize was in 1638

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English Language Learners Definition of theorize

: to think of or suggest ideas about what is possibly true or real : to form or suggest a theory about something

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