(?), n. [L. extensio: cf. F. extension. See Extend, v. t.] 1. The act of extending or the state of being extended; a stretching out; enlargement in breadth or continuation of length; increase; augmentation; expansion.
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2. (Physics) That property of a body by which it occupies a portion of space.
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3. (Logic & Metaph.) (a) Capacity of a concept or general term to include a greater or smaller number of objects; -- correlative of intension. (b) the class or set of objects to which a term refers; -- contrasted with intension, the logical specification which defines members of a class, being the set of attributes which are necessary and sufficient to recognize an object as a member of the class.
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The law is that the intension of our knowledge is in the inverse ratio of its extension.
Sir W. Hamilton.
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The extension of [the term] plant is greater than that of geranium, because it includes more objects.
Abp. Thomson.
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4. (Surg.) The operation of stretching a broken bone so as to bring the fragments into the same straight line.
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5. (Physiol.) The straightening of a limb, in distinction from flexion.
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6. (Com.) A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
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Counter extension. (Surg.) See under Counter. -- Extension table, a table so constructed as to be readily extended or contracted in length.
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