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theoretical

[thee-uh-ret-i-kuh l] /ˌθi əˈrɛt ɪ kəl/
adjective
1.
of, pertaining to, or consisting in theory; not practical (distinguished from applied).
2.
existing only in theory; hypothetical.
3.
given to, forming, or dealing with theories; speculative.
Also, theoretic.
Origin
1610-1620
1610-20; theoretic (< Late Latin theōrēticus < Greek theōrētikós, equivalent to theōrēt(ós) to be seen (verbid of theōreîn to view) + -ikos -ic) + -al1
Related forms
theoretically, adverb
antitheoretical, adjective
antitheoretically, adverb
nontheoretic, adjective
nontheoretical, adjective
nontheoretically, adverb
untheoretic, adjective
untheoretical, adjective
untheoretically, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for theoretical
  • Those theoretical days were long past by the time explorers and settlers crossed the desert.
  • Don't accept theoretical replacement parts: ask the dealer if they keep them in stock.
  • His plans called for a punch-card system that would command the functions of the still-theoretical machine.
  • How rarely one can come to a theoretical agreement with anyone else on a fundamental principle.
  • So much for the theoretical distinction between the three tendencies.
  • Some sort of far-fetched theoretical notion that pathological material may be removed through the intestines.
  • For he had no theoretical objection to corporal punishment.
  • The measure of vis viva in theoretical mechanics is half the product of the weight into the square of the velocity.
  • theoretical walker struts its energy-efficient stuff.
  • The new results lend further theoretical support to such observations.
British Dictionary definitions for theoretical

theoretical

/ˌθɪəˈrɛtɪkəl/
adjective
1.
of or based on theory
2.
lacking practical application or actual existence; hypothetical
3.
using or dealing in theory; impractical
Derived Forms
theoretically, 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 theoretical
adj.

1610s, from Late Latin theoreticus "of or pertaining to theory," from Greek theoretikos "contemplative, pertaining to theory" (by Aristotle contrasted to praktikos), from theoretos "that may be seen or considered," from theorein "to consider, look at" (see theory). Related: Theoretically.

Online Etymology Dictionary, © 2010 Douglas Harper
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theoretical in Medicine

theoretical the·o·ret·i·cal (thē'ə-rět'ĭ-kəl)
adj.

  1. Of, relating to, or based on theory.

  2. Restricted to theory; not practical.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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