theoretical
American Heritage Dictionary:
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the·o·ret·i·cal
(thē'ə-rĕt'ĭ-kəl) 
also the·o·ret·ic (-rĕt'ĭk)
adj.
also the·o·ret·ic (-rĕt'ĭk)adj.
- Of, relating to, or based on theory.
- Restricted to theory; not practical: theoretical physics.
- Given to theorizing; speculative.
[Late Latin theōrēticus, from Greek theōrētikos, from theōrētos, observable, from theōrein, to look at. See theorem.]
theoretically the'o·ret'i·cal·ly adv.SYNONYMS theoretical, abstract, academic, hypothetical, speculative. These adjectives mean concerned primarily with theories or hypotheses rather than practical considerations: theoretical linguistics; abstract reasoning; a purely academic discussion; a hypothetical statement; speculative knowledge.
Roget's Thesaurus:
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theoretical
adjective
- Existing only in concept and not in reality: abstract, hypothetic, hypothetical, ideal, theoretic, transcendent, transcendental. See real/imaginary.
- Concerned primarily with theories rather than practical matters: abstract, academic, speculative, theoretic. See thoughts.
Antonyms by Answers.com:
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theoretical
adj
Definition: hypothetical
Antonyms: certain, definite, factual, proven, real
Word Tutor:
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theoretical
IN BRIEF: Concerned primarily with hypotheses rather than practical considerations.
One of the principal objects of theoretical research in my department of knowledge is to find the point of view from which the subject appears in its greatest simplicity.
— Willard Gibbs (1839-1903)
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Translations:
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Theoretical
Dansk (Danish)
adj. - teoretisk
Nederlands (Dutch)
theoretisch, hypothetisch
Français (French)
adj. - théorique
Deutsch (German)
adj. - theoretisch, in der Theorie
Ελληνική (Greek)
adj. - θεωρητικός
Português (Portuguese)
adj. - teórico (m), especulativo (m)
Русский (Russian)
теоретический, склонный к теоретизированию
Español (Spanish)
adj. - teórico
Svenska (Swedish)
adj. - teoretisk
中文（简体）(Chinese (Simplified))
理论上的, 空谈的
中文（繁體）(Chinese (Traditional))
adj. - 理論上的, 空談的
한국어 (Korean)
adj. - 이론의, 사색적인 , 가정적인
日本語 (Japanese)
adj. - 理論の, 理論好きな, 理論上の
العربيه (Arabic)
(صفه) غير عملي, نظري
עברית (Hebrew)
adj. - מופשט, עיוני, משוער, תיאורטי
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Copyrights:
American Heritage Dictionary
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
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Roget's Thesaurus
Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary Copyright © 1995 byHoughton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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