Dictionary.com
Thesaurus.com

had theorized

  • past perfect
    of theorize.
    theorize
    verb (used without object)
    to form a theory or theories.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The researchers had theorized that electrostatic induction was the mechanism driving the interplay between the worm and its target.

From Science Daily ● Oct. 15, 2025

Scientists had theorized a few explanations for the massive jump in September, which Hausfather called “gobsmacking.”

From Seattle Times ● Jun. 4, 2024

Scientists had theorized that there might be two asteroids since they saw the brightness of Dinkinesh change over time, indicating an orbital shadow.

From Washington Times ● Nov. 3, 2023

Researchers had theorized that national service programs could improve dismally low voting participation rates among young adults.

From Science Magazine ● Jul. 11, 2022

Aristotle had given some anatomical knowledge in his writings on animals, and had theorized a little about the functions of the human body.

From The History of Education; educational practice and progress considered as a phase of the development and spread of western civilization by Ellwood Patterson Cubberley