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experimental

[ik-sper-uh-men-tl]
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adjective
  1. pertaining to, derived from, or founded on experiment: an experimental science.
  2. of the nature of an experiment; tentative: The new program is still in an experimental stage.
  3. functioning as an experiment or used for experimentation: an experimental airplane.
  4. based on or derived from experience; empirical: experimental knowledge.
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noun
  1. something that is experimental.
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Origin of experimental

First recorded in 1400–50; late Middle English word from Medieval Latin word experīmentālis. See experiment, -al1
Related formsex·per·i·men·tal·ly, adverbnon·ex·per·i·men·tal, adjectivenon·ex·per·i·men·tal·ly, adverbpost·ex·per·i·men·tal, adjectivepre·ex·per·i·men·tal, adjectivepseu·do·ex·per·i·men·tal, adjectivepseu·do·ex·per·i·men·tal·ly, adverbqua·si-ex·per·i·men·tal, adjectivequa·si-ex·per·i·men·tal·ly, adverbsem·i·ex·per·i·men·tal, adjectivesem·i·ex·per·i·men·tal·ly, adverbun·ex·per·i·men·tal, adjectiveun·ex·per·i·men·tal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for experimentals

experimental

adjective
  1. relating to, based on, or having the nature of experimentan experimental study
  2. based on or derived from experience; empiricalexperimental evidence
  3. tending to experimentan experimental artist
  4. tentative or provisionalan experimental rule in football
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Derived Formsexperimentally, 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

Word Origin and History for experimentals

experimental

adj.

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).

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Online Etymology Dictionary, © 2010 Douglas Harper