different between deduction vs theory
deduction
English
Etymology
From Middle French déduction, from Latin deductio
Pronunciation
- (UK) IPA(key): /d??d?k??n/, /d??d?k??n/
- (US) IPA(key): /d??d?k??n/
- Rhymes: -?k??n
Noun
deduction (countable and uncountable, plural deductions)
- That which is deducted; that which is subtracted or removed
- A sum that can be removed from tax calculations; something that is written off
- You might want to donate the old junk and just take the deduction.
- (logic) A process of reasoning that moves from the general to the specific, in which a conclusion follows necessarily from the premises presented, so that the conclusion cannot be false if the premises are true.
- Antonym: induction
- A conclusion; that which is deduced, concluded or figured out
- He arrived at the deduction that the butler didn't do it.
- The ability or skill to deduce or figure out; the power of reason
- Through his powers of deduction, he realized that the plan would never work.
Synonyms
- (that which is subtracted or removed): extract, reduction; See also Thesaurus:decrement
Translations
deduction From the web:
- what deductions can i claim
- what deductions can i claim for 2020
- what deductions are required by law
- what deductions can i claim in addition to standard deduction
- what deductions are taken out of a paycheck
- what deductions can you itemize
- what deduction should i claim
- what deductions are included in agi
theory
English
Etymology
From Middle French théorie, from Late Latin the?ria, from Ancient Greek ?????? (the?ría, “contemplation, speculation, a looking at, things looked at”), from ?????? (the?ré?, “I look at, view, consider, examine”), from ?????? (the?rós, “spectator”), from ??? (théa, “view”) + ???? (horá?, “I see, look”) [i. e. ???? ???? (théan horá?, “see, look at a view; survey + genitive”)].
Pronunciation
- (Received Pronunciation, General Australian) IPA(key): /?????i/, /??i???i/, /????i/
- (General American) IPA(key): /??i???i/, /????i/
- Rhymes: -??ri
Noun
theory (countable and uncountable, plural theories)
- A description of an event or system that is considered to be accurate.
- (obsolete) Mental conception; reflection, consideration. [16th-18th c.]
- 1646, Thomas Browne, Pseudodoxia Epidemica, VII.19:
- As they encrease the hatred of vice in some, so doe they enlarge the theory of wickednesse in all.
- 1646, Thomas Browne, Pseudodoxia Epidemica, VII.19:
- (sciences) A coherent statement or set of ideas that explains observed facts or phenomena and correctly predicts new facts or phenomena not previously observed, or which sets out the laws and principles of something known or observed; a hypothesis confirmed by observation, experiment etc. [from 17th c.]
- 1843, John Stuart Mill, ""A System of Logic, Ratiocinative and Inductive, ..., Bk V, Ch 7:
- In its most proper acceptation, theory means the completed result of philosophical induction from experience.
- 2002, Duncan Steel, The Guardian, 23 May 2002:
- It was only when Einstein's theory of relativity was published in 1915 that physicists could show that Mercury's "anomaly" was actually because Newton's gravitational theory was incomplete.
- 2003, Bill Bryson, A Short History of Nearly Everything, BCA, p. 118:
- The world would need additional decades [...] before the Big Bang would begin to move from interesting idea to established theory.
- 2009, Richard Dawkins, The Greatest Show On Earth: The Evidence for Evolution, Bantam, p. 10:
- Scientists and creationists are understanding the word "theory" in two very different senses. Evolution is a theory in the same sense as the heliocentric theory. In neither case should the word "only" be used, as in "only a theory".
- 1843, John Stuart Mill, ""A System of Logic, Ratiocinative and Inductive, ..., Bk V, Ch 7:
- (uncountable) The underlying principles or methods of a given technical skill, art etc., as opposed to its practice. [from 17th c.]
- (mathematics) A field of study attempting to exhaustively describe a particular class of constructs. [from 18th c.]
- Knot theory classifies the mappings of a circle into 3-space.
- A hypothesis or conjecture. [from 18th c.]
- 2003, Sean Coughlan, The Guardian, 21 Jun 2003:
- The theory is that by stripping costs to the bone, they are able to offer ludicrously low fares.
- 2003, Sean Coughlan, The Guardian, 21 Jun 2003:
- (countable, logic) A set of axioms together with all statements derivable from them; or, a set of statements which are deductively closed. Equivalently, a formal language plus a set of axioms (from which can then be derived theorems). The statements may be required to all be bound (i.e., to have no free variables).
- A theory is consistent if it has a model.
Usage notes
In scientific discourse, the sense “unproven conjecture” is discouraged (with hypothesis or conjecture preferred), due to unintentional ambiguity and intentional equivocation with the sense “well-developed statement or structure”.
Synonyms
- See also Thesaurus:supposition
Hyponyms
Meronyms
- (in logic): axioms
Holonyms
- (in logic): formal system
Related terms
Translations
See also
- axiom
- postulate
- proposition
References
- theory at OneLook Dictionary Search
- theory in Keywords for Today: A 21st Century Vocabulary, edited by The Keywords Project, Colin MacCabe, Holly Yanacek, 2018.
- "theory" in Raymond Williams, Keywords (revised), 1983, Fontana Press, page 316.
- theory in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
Anagrams
- Yother, thyreo-
theory From the web:
- what theory was huygens writing about
- what theory did copernicus propose
- what theory means
- what theory explains color blindness
- what theory is cbt based on
- what theory is motivational interviewing based on
- what theory of government is the us
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