1 [ab-duhk-shuhn]
act of abducting.
the state of being abducted.
Law. the illegal carrying or enticing away of a person, especially by interfering with a relationship, as the taking of a child from its parent.

1620–30; abduct + -ion

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2 [ab-duhk-shuhn]
noun Logic.
a syllogism whose major premise is certain but whose minor premise is probable.

1690–1700; < Neo-Latin abductiōn- (stem of abductiō; translation of Greek apagōgḗ). See abduct, -ion

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
abduction (æbˈdʌkʃən)
1.  the act of taking someone away by force or cunning; kidnapping
2.  the action of certain muscles in pulling a leg, arm, etc away from the median axis of the body

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1620s, "a leading away," from L. abductionem (nom. abductio), noun of action from abducere "to lead away," from ab- "away" + ducere "to lead" (see duke). The illegal activity so called from 1768; before that the word also was a term in surgery and logic. In the Mercian hymns,
L. abductione is glossed by O.E. wiðlaednisse.
Online Etymology Dictionary, © 2010 Douglas Harper
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Computing Dictionary

abduction definition

The process of inference to the best explanation.
"Abduction" is sometimes used to mean just the generation of hypotheses to explain observations or conclusionsm, but the former definition is more common both in philosophy and computing.
The semantics and the implementation of abduction cannot be reduced to those for deduction, as explanation cannot be reduced to implication.
Applications include fault diagnosis, plan formation and default reasoning.
Negation as failure in logic programming can both be given an abductive interpretation and also can be used to implement abduction. The abductive semantics of negation as failure leads naturally to an argumentation-theoretic interpretation of default reasoning in general.
[Better explanation? Example?]
["Abductive Inference", John R. Josephson jj@cis.ohio-state.edu].
The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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