Synonyms of experiment
1
a
: test, trial
… make another / experiment of his suspicion …—William Shakespeare
b
: a tentative procedure or policy
The company is trying an experiment in staggered starting times.
c
: an operation or procedure carried out under controlled conditions in order to discover an unknown effect or law, to test or establish a hypothesis, or to illustrate a known law
2
obsolete : experience
3
: the process of testing : experimentation

experiment

2 of 3

verb

ex·​per·​i·​ment ik-ˈsper-ə-ˌment How to pronounce experiment (audio)
also -ˈspir
experimented; experimenting; experiments

intransitive verb

: to carry out experiments : try out a new procedure, idea, or activity

experimentation

3 of 3

noun (2)

ex·​per·​i·​men·​ta·​tion
(ˌ)ek-, 
-ˌmen‧-
plural -s
1
: the act, process, or practice of making experiments
a tendency among lay critics to confine experimentation to scientists in the laboratory—John Dewey
2
: an instance of experimentation : experiment
an outgrowth and culmination of numerous experimentations and inventions—William Chomsky

Synonyms of experiment

Examples of experiment in a Sentence

Noun (1) Students will carry out simple laboratory experiments. They did some experiments with magnets. These theories have not yet been confirmed by experiment. an experiment in living more frugally the city's experiment with a longer school year
Recent Examples on the Web
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Noun
That could make removing space junk a routine service rather than an occasional experiment. — Kurt Knutsson, FOXNews.com, 25 Oct. 2026 Participants fell into their roles a little too well and, after a prisoner rebellion, increasingly cruel forms of punishment from the guards and a number of students suffering mental breakdowns, the experiment was ended on the sixth day. — Marlow Stern, Variety, 25 Oct. 2026
Verb
The feat concludes a pursuit that began in 2009, when Zhang first experimented with riding a motorcycle on water and overcame early failures to achieve his latest goal. — Jijo Malayil, Interesting Engineering, 26 Oct. 2026 In June, the company began reaching out to microdrama studios in Southeast Asia to experiment with the feature, and has since been reaching out to individual creators, who have been experimenting with their own episodic content. — Caitlin Huston, HollywoodReporter, 26 Oct. 2026 See All Example Sentences for experiment

Word History

Etymology

Noun (1)

Middle English, "testing, proof, remedy," borrowed from Anglo-French esperiment, borrowed from Latin experīmentum "testing, experience, proof," from experīrī "to put to the test, attempt, have experience of, undergo" + -mentum -ment — more at experience entry 1

Verb

verbal derivative of experiment entry 1

First Known Use

Noun (1)

14th century, in the meaning defined at sense 1a

Verb

1667, in the meaning defined above

Time Traveler
The first known use of experiment was in the 14th century

Browse Nearby Words

Cite this Entry

“Experiment.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/experiment. Accessed 27 Oct. 2026.

Kids Definition

experiment

1 of 2 noun
: test entry 1 sense 1, trial entry 1 sense 1
especially : a procedure or operation carried out under controlled conditions in order to discover something, to test a hypothesis, or to serve as an example

experiment

2 of 2 verb
: to make experiments

Medical Definition

experiment

1 of 2 noun
ex·​per·​i·​ment
ik-ˈsper-ə-mənt also -ˈspir-
1
: a procedure carried out under controlled conditions in order to discover an unknown effect or law, to test or establish a hypothesis, or to illustrate a known law
2
: the process of testing : experimentation
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