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[ik-sper-uh-men-tl] /ɪkˌspɛr əˈmɛn tl/
pertaining to, derived from, or founded on experiment:
an experimental science.
of the nature of an experiment; tentative:
The new program is still in an experimental stage.
functioning as an experiment or used for experimentation:
an experimental airplane.
based on or derived from experience; empirical:
experimental knowledge.
something that is experimental.
Origin of experimental
late Middle English
1400-50; late Middle English < Medieval Latin experīmentālis. See experiment, -al1
Related forms
experimentally, adverb
nonexperimental, adjective
nonexperimentally, adverb
postexperimental, adjective
preexperimental, adjective
pseudoexperimental, adjective
pseudoexperimentally, adverb
quasi-experimental, adjective
quasi-experimentally, adverb
semiexperimental, adjective
semiexperimentally, adverb
unexperimental, adjective
unexperimentally, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for experimental
  • It's still in the development stage, but several experimental vaccines tested on laboratory monkeys have proved successful.
  • Its verse is by no means of equal value, and some of it was experimental work by persons of no special poetic talent.
  • Much of its work was sound and still endures, if much was experimental and had to be undone.
  • Democracy was still experimental, doubtful, full of gun-powder.
  • No doubt it will accept the experimental proof here alleged, if and when it is repeated under conditions-Times.
  • It has also been discovered by experimental psychologists, who study the animals' thinking processes.
  • The syringe contains an experimental contraceptive drug.
  • The fact of the matter is that experimental animals are treated extremely well.
  • Before computers, this experimental section helped engineers model the effects of compression on the finished bridge's cables.
  • There's a big gap between farmers' yields and experimental yields, that is, the highest that could be achieved.
British Dictionary definitions for experimental


relating to, based on, or having the nature of experiment: an experimental study
based on or derived from experience; empirical: experimental evidence
tending to experiment: an experimental artist
tentative or provisional: an experimental rule in football
Derived Forms
experimentally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for experimental

mid 15c., "having experience," from experiment (n.) + -al (1). Meaning "based on experience" is from 1560s. Meaning "for the sake of experiment" is from 1792 (e.g. Experimental farm).

Online Etymology Dictionary, © 2010 Douglas Harper
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