hy·poth·e·size | \hī-ˈpä-thə-ˌsīz \
hypothesized; hypothesizing

Definition of hypothesize 

transitive verb

: to adopt as a hypothesis

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Examples of hypothesize in a Sentence

Psychologists hypothesized that his odd behavior was caused by a chemical imbalance in the brain. if we hypothesize that current population trends continue for the next 50 years

Recent Examples on the Web

Cosmopolitan magazine had a body language expert analyze photos of them to hypothesize about their developing relationship. Lauren Chval, chicagotribune.com, "As Meghan Markle and Kate Middleton get closer, what's the ideal sister-in-law relationship?," 29 Mar. 2018 The finding jibes with what astronomers hypothesize about how the solar system formed. Jason Daley, Smithsonian, "Diamonds Trapped in Strange Meteorite Came From Solar System’s Earliest Planets," 19 Apr. 2018 Brown hypothesizes that Uber and Lyft drivers might be less discriminatory because their services are cashless, which makes them less appealing targets for robbery. Aarian Marshall, WIRED, "The Good and Bad of Ride-Sharing When It Comes to Race," 11 July 2018 Andreas Nieder, the cognitive scientist from Germany, hypothesizes there are four psychological steps to understand zero, and each step is more cognitively complicated than the one before it. Brian Resnick, Vox, "The mind-bendy weirdness of the number zero, explained," 5 July 2018 But the scientists hypothesize that seasonal temperature shifts cause methane buried under the planet's surface to seep into the atmosphere through cracks and fissures in the surface (see diagram below). David Freeman /, NBC News, "Mars rover Curiosity's new findings hailed as 'breakthroughs in astrobiology'," 7 June 2018 The rise in the number of Americans not working because of disability was so persistent for two decades that some economists began to hypothesize that the trend would never reverse. Ernie Tedeschi, New York Times, "Will Employment Keep Growing? Disabled Workers Offer a Clue," 15 Mar. 2018 But some national caving rescue experts are weighing in, hypothesizing about how the cave’s conditions could have helped the group. Jaclyn Reiss, BostonGlobe.com, "How did 12 boys and their coach survive in a Thai cave for more than a week? Experts weigh in," 2 July 2018 Researchers hypothesized that the insects either remained in Africa or made a roundtrip, but there was no evidence either way. Leah Rosenbaum, Washington Post, "The amazing 7,500-mile annual migration of painted lady butterflies," 23 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hypothesize.' 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 hypothesize

1738, in the meaning defined at intransitive sense

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Last Updated

10 Oct 2018

Look-up Popularity

Time Traveler for hypothesize

The first known use of hypothesize was in 1738

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More Definitions for hypothesize



English Language Learners Definition of hypothesize

: to suggest (an idea or theory) : to make or suggest (a hypothesis)

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Comments on hypothesize

What made you want to look up hypothesize? Please tell us where you read or heard it (including the quote, if possible).


to reject or criticize sharply

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