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 (thē′ər-ĭst, thîr′ĭst)
One who theorizes; a theoretician.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


the originator of a theory; a person who is concerned with theory; a theoretician
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈθi ər ɪst, ˈθɪər-)

1. a person who theorizes.
2. a person who deals mainly with the theory of a subject.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


a person who forms theories or who specializes in the theory of a particular subject.
See also: Ideas, Learning
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.theorist - someone who theorizes (especially in science or art)
artistic creation, artistic production, art - the creation of beautiful or significant things; "art does not need to be innovative to be good"; "I was never any good at art"; "he said that architecture is the art of wasting space beautifully"
science, scientific discipline - a particular branch of scientific knowledge; "the science of genetics"
intellectual, intellect - a person who uses the mind creatively
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
elméleti szakemberteoretikus
kenningasmiîur, fræîimaîur


[ˈθɪərɪst] nteorico/a
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995


(ˈθiəri) plural ˈtheories noun
1. an idea or explanation which has not yet been proved to be correct. There are many theories about the origin of life; In theory, I agree with you, but it would not work in practice.
2. the main principles and ideas in an art, science etc as opposed to the practice of actually doing it. A musician has to study both the theory and practice of music.
ˌtheoˈretical (-ˈreti-) adjective
ˌtheoˈretically (-ˈreti-)
ˈtheorize, ˈtheorise verb
to make theories. He did not know what had happened, so he could only theorize about it.
ˈtheorist noun
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.
References in classic literature ?
With Pfuel was Wolzogen, who expressed Pfuel's thoughts in a more comprehensible way than Pfuel himself (who was a harsh, bookish theorist, self-confident to the point of despising everyone else) was able to do.
Theorist,--don't promise too much!" snapped the detective.
This is that Lavalle whom the world, immersed in speculations of immediate gain, did not know nor suspect--the Lavalle whom they adjudged to the last a pedant and a theorist.
Would it be wonderful if, under the pressure of all these difficulties, the convention should have been forced into some deviations from that artificial structure and regular symmetry which an abstract view of the subject might lead an ingenious theorist to bestow on a Constitution planned in his closet or in his imagination?
"--or if she had wanted to marry the man who calls for Carter Paterson, I should have said the same." Then, with one of those turns that convinced her aunt that she was not mad really and convinced observers of another type that she was not a barren theorist, she added: "Though in the case of Carter Paterson I should want it to be a very long engagement indeed, I must say."
The true value of his character lay in that deep consciousness of inward strength, which made all his past vicissitudes seem merely like a change of garments; in that enthusiasm, so quiet that he scarcely knew of its existence, but which gave a warmth to everything that he laid his hand on; in that personal ambition, hidden--from his own as well as other eyes--among his more generous impulses, but in which lurked a certain efficacy, that might solidify him from a theorist into the champion of some practicable cause.
Fyne waited at the door with her quite unmoved physiognomy and her readiness to confront any sort of responsibility, which already characterized her, long before she became a ruthless theorist. Relieved, his mission accomplished, Fyne closed hastily the door of the sitting-room.
It must always remain the great curiosity of history--a whim, a fantasy, an apparition, a thing unexpected and undreamed; and it should serve as a warning to those rash political theorists of to-day who speak with certitude of social processes.
While there's life there's hope is a conviction not so entirely unknown to the "betrayed" as some amiable theorists would have us believe.
Some few of the more advanced and inveterate theorists set themselves again to work upon calculations regarding the laws of projectiles.
Some of these theorists have been pleased to declare it as their favourite notion that this inundation is caused by high winds which stop the current, and so force the water to rise above its banks, and spread over all Egypt.
Only man could have placed that collar there, and as no race of Martians of which we knew aught ever had attempted to domesticate the ferocious apt, he must belong to a people of the north of whose very existence we were ignorant--possibly to the fabled yellow men of Barsoom; that once powerful race which was supposed to be extinct, though sometimes, by theorists, thought still to exist in the frozen north.