Ex*ten"sion (?), n. [L. extensio: cf. F. extension. See Extend, v. t.]


The act of extending or the state of being extended; a stretching out; enlargement in breadth or continuation of length; increase; augmentation; expansion.

2. Physics

That property of a body by which it occupies a portion of space.

3. Logic & Metaph.

Capacity of a concept or general term to include a greater or smaller number of objects; -- correlative of intension.

The law is that the intension of our knowledge is in the inverse ratio of its extension. Sir W. Hamilton.

The extension of [the term] plant is greater than that of geranium, because it includes more objects. Abp. Thomson.

4. Surg.

The operation of stretching a broken bone so as to bring the fragments into the same straight line.

5. Physiol.

The straightening of a limb, in distinction from flexion.

6. Com.

A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.

Counter extension. Surg. See under Counter. -- Extension table, a table so constructed as to be readily extended or contracted in length.


© Webster 1913.