Extend
Part of speech: verb
Definition: To increase in extent. To possess a certain extent. To cause to increase in extent. To cause to last for a longer period of time. To straighten (a limb).
Extension
Part of speech: noun
Definition: The act of extending or the state of being extended; a stretching out; enlargement in breadth or continuation of length; increase; augmentation; expansion.That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension")Capacity of a concept or general term to include a greater or smaller number of objects; -- correlative of intension.A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.The operation of stretching a broken bone so as to bring the fragments into the same straight line.An exercise in which an arm or leg is straightened against resistance.A simple offensive action, consisting of extending the weapon arm forward.A numerical code used to specify a specific telephone in a telecommunication network.A file extension.