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logical

[loj-i-kuh l] /ˈlɒdʒ ɪ kəl/
adjective
1.
according to or agreeing with the principles of logic:
a logical inference.
2.
reasoning in accordance with the principles of logic, as a person or the mind:
logical thinking.
3.
reasonable; to be expected:
War was the logical consequence of such threats.
4.
of or pertaining to logic.
Origin
1490-1500
1490-1500; < Medieval Latin logicālis. See logic, -al1
Related forms
logicality
[loj-i-kal-i-tee] /ˌlɒdʒ ɪˈkæl ɪ ti/ (Show IPA),
logicalness, noun
logically, adverb
hyperlogical, adjective
hyperlogically, adverb
hyperlogicalness, noun
hyperlogicality, noun
nonlogical, adjective
nonlogically, adverb
nonlogicalness, noun
nonlogicality, noun
overlogical, adjective
overlogically, adverb
overlogicalness, noun
overlogicality, noun
prelogical, adjective
prelogically, adverb
quasi-logical, adjective
quasi-logically, adverb
superlogical, adjective
superlogically, adverb
superlogicality, noun
unlogical, adjective
unlogically, adverb
Synonyms
1, 3. valid.
Antonyms
1–3. unreasonable.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for logical
  • It also survives as a model of logical thought, and a vibrant and engaging work of literature.
  • Geometry ought to refrain from such a course, in order to give to its structure the largest possible logical unity.
  • Our logical thoughts dominate experience only as the parallels and meridians make a checkerboard of the sea.
  • It begins with axioms, or accepted truths, and employs a series of logical statements to arrive at a conclusion.
  • Nothing about it can be modified without destroying its logical structure.
  • For them, going to extremes that may seem insane was actually a logical progression.
  • Giraffes sleep briefly and lightly-logical for animals that nap out in the open.
  • But as in basketball, there needs to be a logical system.
  • Then, of course, we'll take the experiment to its logical conclusion by crowdsourcing a remix of the winning song.
  • They are the logical result of a system that pushes professors toward other concerns.
British Dictionary definitions for logical

logical

/ˈlɒdʒɪkəl/
adjective
1.
relating to, used in, or characteristic of logic
2.
using, according to, or deduced from the principles of logic: a logical conclusion
3.
capable of or characterized by clear or valid reasoning
4.
reasonable or necessary because of facts, events, etc: the logical candidate
5.
(computing) of, performed by, used in, or relating to the logic circuits in a computer
Derived Forms
logicality, logicalness, noun
logically, 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 logical
adj.

early 15c., "based on reason," from logic + -al (1). Meaning "pertaining to logic" is c.1500. Attested from 1860 as "following as a reasonable consequence." Related: Logically.

Online Etymology Dictionary, © 2010 Douglas Harper
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logical in Technology


(From the technical term "logical device", wherein a physical device is referred to by an arbitrary "logical" name) Having the role of. If a person (say, Les Earnest at SAIL) who had long held a certain post left and were replaced, the replacement would for a while be known as the "logical" Les Earnest. (This does not imply any judgment on the replacement).
Compare virtual.
At Stanford, "logical" compass directions denote a coordinate system in which "logical north" is toward San Francisco, "logical west" is toward the ocean, etc., even though logical north varies between physical (true) north near San Francisco and physical west near San Jose. (The best rule of thumb here is that, by definition, El Camino Real always runs logical north-and-south.) In giving directions, one might say: "To get to Rincon Tarasco restaurant, get onto El Camino Bignum going logical north." Using the word "logical" helps to prevent the recipient from worrying about that the fact that the sun is setting almost directly in front of him. The concept is reinforced by North American highways which are almost, but not quite, consistently labelled with logical rather than physical directions.
A similar situation exists at MIT: Route 128 (famous for the electronics industry that has grown up along it) is a 3-quarters circle surrounding Boston at a radius of 10 miles, terminating near the coastline at each end. It would be most precise to describe the two directions along this highway as "clockwise" and "counterclockwise", but the road signs all say "north" and "south", respectively. A hacker might describe these directions as "logical north" and "logical south", to indicate that they are conventional directions not corresponding to the usual denotation for those words. (If you went logical south along the entire length of route 128, you would start out going northwest, curve around to the south, and finish headed due east, passing along one infamous stretch of pavement that is simultaneously route 128 south and Interstate 93 north, and is signed as such!)
[Jargon File]
(1995-01-24)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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