extension

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The act of extending or the condition of being extended.
2. n. The amount, degree, or range to which something extends or can extend: The wire has an extension of 50 feet.
3. n. The act of straightening or extending a limb.
4. n. The position assumed by an extended limb.
5. n. Medicine The application of traction to a fractured or dislocated limb to restore the normal position.
6. n. An addition that increases the area, influence, operation, or contents of something: an extension for the vacuum cleaner; built a new extension onto the hospital wing.
7. n. An additional telephone connected to a main line.
8. n. An allowance of extra time, as for the repayment of a debt.
9. n. The period of this extra time: three months' extension on the loan.
10. n. The property of an object by which it occupies space.
11. n. A program in a university, college, or school that offers instruction, as by television or correspondence, to persons unable to attend at the usual time or in the usual place.
12. n. Logic The class of objects designated by a specific term or concept; denotation.
13. n. Mathematics A set that includes a given and similar set as a subset.
14. n. Computer Science A set of characters that follow a filename and are separated from it by a period, used to identify the kind of file: In most operating systems, file names having the extension .EXE are executable files.

Century Dictionary and Cyclopedia

1. n. The act of extending; a stretching or expanding. Specifically— In surgery, the act of pulling the broken part of a limb in a direction from the trunk, in order to bring the ends of the bone into their natural situation.
2. n. The state of being extended; enlargement; expansion; extent.
3. n. In physics and metaphysics, continuous quantity of space; also, that property of a body by which it occupies a portion of space.
4. n. The character of having continuous quantity of any kind, as length of time, weight, etc.
5. n. In logic, the totality of subjects of which a logical term is predicable. Logical extension is generally understood to consist of individual objects, but some logicians make it consist of species. The extension is also called the supposita, the subjective parts, the external quantity, the scope, the denotation, and the breadth. (See breadth.) It is contrasted with comprehension and intention. Many logicians say that the greater the extension of a term, the less its comprehension—that is, the more subjects it can be predicated of, the fewer the predicates that can be asserted of it universally. But this statement takes no account of increase of knowledge.
6. n. A grant of further time in which to do something which has been set down for a particular day. Specifically— In legal proceedings, a postponement, by agreement of the parties or act of the court, of the time set for service of papers or for other acts.
7. n. That by which something is extended or enlarged; particularly (in the United States), an addition to a house, usually at the rear, and not so high as the main building: as, a dining-room extension. The term applies whether the extension is part of the original building or is a subsequent addition.

Wiktionary

1. n. The act of extending or the state of being extended; a stretching out; enlargement in breadth or continuation of length; increase; augmentation; expansion.
2. n. That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension")
3. n. semantics Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension.
4. n. banking, finance A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
5. n. medicine The operation of stretching a broken bone so as to bring the fragments into the same straight line.
6. n. weightlifting An exercise in which an arm or leg is straightened against resistance.
7. n. fencing A simple offensive action, consisting of extending the weapon arm forward.
8. n. telecommunications A numerical code used to specify a specific telephone in a telecommunication network.
9. n. computing A file extension.

GNU Webster's 1913

1. n. The act of extending or the state of being extended; a stretching out; enlargement in breadth or continuation of length; increase; augmentation; expansion.
2. n. (Physics) That property of a body by which it occupies a portion of space.
3. n. Capacity of a concept or general term to include a greater or smaller number of objects; -- correlative of intension.
4. n. 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.
5. n. (Surg.) The operation of stretching a broken bone so as to bring the fragments into the same straight line.
6. n. (Physiol.) The straightening of a limb, in distinction from flexion.
7. n. (Com.) A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.

WordNet 3.0

1. n. amount or degree or range to which something extends
2. n. an addition to the length of something
3. n. a mutually agreed delay in the date set for the completion of a job or payment of a debt
4. n. an educational opportunity provided by colleges and universities to people who are not enrolled as regular students
5. n. act of stretching or straightening out a flexed limb
6. n. a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename
7. n. an addition that extends a main building
8. n. act of expanding in scope; making more widely available
9. n. the ability to raise the working leg high in the air
10. n. the most direct or specific meaning of a word or expression; the class of objects that an expression refers to
11. n. an additional telephone set that is connected to the same telephone line
12. n. the spreading of something (a belief or practice) into new regions