ex·per·i·men·tal

[ik-sper-uh-men-tl]
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.
noun
5.
something that is experimental.
00:10
Experimental is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
an extraordinary or unusual thing, person, or event; an exceptional example or instance.

Origin:
1400–50; late Middle English < Medieval Latin experīmentālis. See experiment, -al1

ex·per·i·men·tal·ly, adverb
non·ex·per·i·men·tal, adjective
non·ex·per·i·men·tal·ly, adverb
post·ex·per·i·men·tal, adjective
pre·ex·per·i·men·tal, adjective
pseu·do·ex·per·i·men·tal, adjective
pseu·do·ex·per·i·men·tal·ly, adverb
qua·si-ex·per·i·men·tal, adjective
qua·si-ex·per·i·men·tal·ly, adverb
sem·i·ex·per·i·men·tal, adjective
sem·i·ex·per·i·men·tal·ly, adverb
un·ex·per·i·men·tal, adjective
un·ex·per·i·men·tal·ly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To experimental
Collins
World English Dictionary
experimental (ɪkˌspɛrɪˈmɛntəl) [Click for IPA pronunciation guide]
 
adj
1.  relating to, based on, or having the nature of experiment: an experimental study
2.  based on or derived from experience; empirical: experimental evidence
3.  tending to experiment: an experimental artist
4.  tentative or provisional: an experimental rule in football
 
experi'mentally
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

experimental
mid 15c., from experiment + -al (1). Experimental farm is recorded from 1792.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
It's still in the development stage, but several experimental vaccines tested
  on laboratory monkeys have proved successful.
It has also made an experimental optical transceiver that plugs into a laptop
  to receive and send light signals.
It was natural for him, following his sense of the beautiful, to move away from
  experimental physics and toward astronomy.
Despite new ideas and experimental activity, it is possible that none of these
  tests will find any support for string theory.
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