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theoretical

American  
[thee-uh-ret-i-kuhl] / ˌθi əˈrɛt ɪ kəl /
Often theoretic

adjective

  1. of, relating to, or consisting in theory; not practical (applied ).

  2. existing only in theory; hypothetical.

  3. given to, forming, or dealing with theories; speculative.


theoretical British  
/ ˌθɪəˈrɛtɪkəl, ˌθɪəˈrɛtɪk /

adjective

  1. of or based on theory

  2. lacking practical application or actual existence; hypothetical

  3. using or dealing in theory; impractical

"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

Other Word Forms

  • antitheoretical adjective
  • nontheoretic adjective
  • nontheoretical adjective
  • theoretically adverb
  • untheoretic adjective
  • untheoretical adjective

Etymology

Origin of theoretical

First recorded in 1610–20; theoretic, from Late Latin theōrēticus, from Greek theōrētikós, equivalent to theōrēt(ós) “to be seen” (verbal adjective derived from theōreîn “to view”) + -ikos -ic; -al 1

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The 26-member team includes eight Ph.D.s, including Kosowski, a theoretical computer scientist, mathematician and quantum physicist who received his doctorate at age 20.

From The Wall Street Journal

There are different kinds of art criticism — theoretical, and academic, two that turn up in different kinds of scholarly journals; trade, sponsored in commercially supported magazines; and journalistic, embedded in press reporting on everyday life.

From Los Angeles Times

Earlier theoretical work on somewhat smaller intermediate-mass black holes had suggested that a gas-enshrouded configuration like this could enable very rapid black hole growth in the early universe.

From Science Daily

The estimated frequency of these annihilation events based on the observed gamma ray intensity also fits within expected theoretical ranges.

From Science Daily

For low and intermediate intensities, the theoretical model captures only part of the experimental behavior.

From Science Daily