[ 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.

Nearby words

  1. experiencer,
  2. experiential,
  3. experientialism,
  4. experiment,
  5. experiment station,
  6. experimental condition,
  7. experimental group,
  8. experimental medicine,
  9. experimental psychology,
  10. experimental theater

Origin of experimental

First recorded in 1400–50; late Middle English word from Medieval Latin word experīmentālis. See experiment, -al1

Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for semi-experimental


/ (ɪkˌspɛrɪˈmɛntəl) /


relating to, based on, or having the nature of experimentan experimental study
based on or derived from experience; empiricalexperimental evidence
tending to experimentan experimental artist
tentative or provisionalan experimental rule in football
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 semi-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