experiment
Americannoun
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a test, trial, or tentative procedure; an act or operation for the purpose of discovering something unknown or of testing a principle, supposition, etc..
a chemical experiment; a teaching experiment; an experiment in living.
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the conducting of such operations; experimentation.
a product that is the result of long experiment.
- Synonyms:
- investigation, research
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Obsolete. experience.
verb (used without object)
noun
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a test or investigation, esp one planned to provide evidence for or against a hypothesis: a scientific experiment
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the act of conducting such an investigation or test; experimentation; research
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an attempt at something new or different; an effort to be original
a poetic experiment
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an obsolete word for experience
verb
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A test or procedure carried out under controlled conditions to determine the validity of a hypothesis or make a discovery.
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See Note at hypothesis
Related Words
See trial.
Other Word Forms
- experimentator noun
- experimenter noun
- experimentor noun
- preexperiment noun
- proexperiment adjective
- reexperiment verb (used without object)
- unexperimented adjective
Etymology
Origin of experiment
First recorded in 1325–75; Middle English: “proof,” from Latin experīmentum “test, trial,” from experī(rī) “to test, try” ( experience ) + -mentum -ment
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.
During the experiment, they saw an additional dark band appear at the front edge of the cell, the area that extends as the cell moves.
From Science Daily • Apr. 1, 2026
The idea of having Foden as Kane's central striking understudy is now a non-starter after the experiment of using him as a false nine against Japan was cut short after less than an hour.
From BBC • Apr. 1, 2026
The data they got from the experiment informed the design of the Space Shuttle.
From Los Angeles Times • Mar. 31, 2026
The idea is to give them a number of years to experiment before either coming into compliance with the traditional rules or proving they don’t need to comply.
From Barron's • Mar. 31, 2026
A séance experiment could produce different results in different people.
From "American Spirits" by Barb Rosenstock
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
