¦ noun
1. the action or process of extending.
an additional period of time given to someone to hold office or fulfil an obligation.
Brit. permission granted to licensed premises for the sale of alcoholic drinks until later than usual.
2. a part added to something to enlarge or prolong it.
(extensions) lengths of long artificial hair woven into a person's own hair.
3. a subsidiary telephone, especially one with its own additional number on a line leading from a main switchboard.
4. (Brit. also extension lead or cable US also extension cord) a length of electric cable which enables appliances to be used at a distance from a fixed socket.
5. [as modifier] denoting instruction by a university or college for those who are not full-time students.
6. the extending of a limb from a bent to a straight position.
Ballet the ability of a dancer to raise one leg above the waist, especially to the side.
7.
Logic the range of a term or concept as measured by the objects which it denotes or contains. Often contrasted with
intension.
8. Physics & Philosophy the property of occupying space.
Derivatives
extensional adjective
Origin
ME: from late L.
extensio(n-), from
extendere (see
extend).