Definition of Logical

See Logical positivism ; Logical atomism ; Logical constructs ; Phenomenalism ; Logical empiricism ; Scientific empiricism ; Logical explanation ; Reasons, good ; and Philosophical analysis

one of Kant's four main perspectives, aiming to establish a kind of knowledge which is both analytic and a priori. Hence it is concerned with nothing but the relationships between concepts. The law of noncontradiction (A is not -A) is the fundamental law of traditional, Aristotelian logic. (If we call this 'analytic' logic, then 'synthetic' logic would be based on the opposite law of 'contradiction' [A is -A].) 'All bachelors are unmarried' is a typical logical statement. (Cf. hypothetical.)

(a.)
Skilled in logic; versed in the art of thinking and reasoning; as, he is a logical thinker.
  

(a.)
Of or pertaining to logic; used in logic; as, logical subtilties.
  

(a.)
According to the rules of logic; as, a logical argument or inference; the reasoning is logical.
  

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logical
\log"ic*al\ (?), a. [cf. f. logique, l. logicus, gr. &?;.]
1. of or pertaining to logic; used in logic; as, logical subtilties.
2. according to the rules of logic; as, a logical argument or inference; the reasoning is logical.
3. skilled in logic; versed in the art of thinking and reasoning; as, he is a logical thinker.
logical
adj
1. capable of or reflecting the capability for correct and valid reasoning; "a logical mind" [ant: illogical]
2. in accordance with reason or logic; "a logical conclusion" [syn: legitimate]


3. marked by an orderly, logical, and aesthetically consistent relation of parts; "a logical argument"; "the orderly presentation" [syn: consistent, ordered, orderly]


4. based on known statements or events or conditions; "rain was a logical expectation, given the time of year"
5. capable of thinking and expressing yourself in a clear and consistent manner; "a lucid thinker"; "she was more coherent than she had been just after the accident" [syn: coherent, lucid]

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  similar words(25) 

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 logical system 
 logical proof 
 logical unit 62 
 logical argument 
 logical positivist 
 independent logical file 
 logical induction 
 logical unit number 
 logical shift 
 logical shift left 
 logical impossibility 
 logical implication 
 logical shift right 
 logical fallacy 
 logical operation 
 logical link control 
 logical complement 
 logical thinking 
 logical relation 
 logical block addressing 
 logical diagram 
 logical address 
 logical quantifier 
 logical positivism 
 logical unit 

Capable of or characterized by clear reasoning.

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Adjective
1. capable of or reflecting the capability for correct and valid reasoning; "a logical mind"
(antonym) illogical, unlogical
(similar) dianoetic, discursive
(see-also) analytic, analytical
(attribute) logicality, logicalness
2. in accordance with reason or logic; "a logical conclusion"
(synonym) legitimate
(similar) valid
3. marked by an orderly, logical, and aesthetically consistent relation of parts; "a logical argument"; "the orderly presentation"
(synonym) consistent, ordered, orderly
(similar) coherent
4. based on known statements or events or conditions; "rain was a logical expectation, given the time of year"
(similar) reasonable, sensible
5. capable of thinking and expressing yourself in a clear and consistent manner; "a lucid thinker"; "she was more coherent than she had been just after the accident"
(synonym) coherent, lucid
(similar) rational

adj. [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 labeled 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!)

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