Ex-tēn’sion, n.

noun

(eks-tēn’shun), n. [Lat. extensio, from extendere; Fr. & Sp. extension, Pr. extensio, It. estensione, stensione.]

The act of extending; a stretching.
The state of being extended; enlargement in breadth, or continuation of length.
(Physics & Metaph.) That property of a body by which it occupies a portion of space.
(Com.) A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.