Extension (noun) Definition, Meaning & Examples

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noun
  1. an act or instance of extending, lengthening, stretching out, or enlarging the scope of something.
  2. the state of being extended, lengthened, or stretched out.
  3. that by which something is extended or enlarged; an addition: a four-room extension to a house.
  4. an additional period of time given one to meet an obligation: My term paper wasn't finished so I asked for an extension.
  5. something that is expandable or can be extended; an extended object: a table with drop-leaf extensions.
  6. range or scope of extending; degree of extensiveness; extent: the extension of our knowledge.
  7. an additional telephone that operates on the principal line.
  8. a written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
  9. that property of a body by which it occupies space.
  10. Anatomy.
    • the act of straightening a limb.
    • the position that a limb assumes when it is straightened.
  11. the act of pulling the broken or dislocated part of a limb in a direction from the trunk, in order to bring the ends of the bone into their natural situation.
  12. the class of things to which a term is applicable, as “the class of such beings as Plato and Alexander” to which the term “man” is applicable.
  13. a function having a domain that includes the domain of a given function and that has the same value as the given function at each point in the domain of the given function.
  14. one or more characters at the end of a filename, usually following a period, used to indicate the type of file.
  15. the act of bringing or coming into an extended attitude.
adjective
  1. of or relating to extension courses.
noun
  1. the act of extending or the condition of being extended
  2. something that can be extended or that extends another object
  3. the length, range, etc, over which something is extended; extent
  4. an additional telephone set connected to the same telephone line as another set or other sets
  5. a room or rooms added to an existing building
  6. a delay, esp one agreed by all parties, in the date originally set for payment of a debt or completion of a contract
  7. the property of matter by which it occupies space; size
    • the act of straightening or extending an arm or leg
    • its position after being straightened or extended
  9. a steady pull applied to a fractured or dislocated arm or leg to restore it to its normal position
    • a service by which some of the facilities of an educational establishment, library, etc, are offered to outsiders
    • (as modifier)
  11. logic
    • the class of entities to which a given word correctly applies: thus, the extension of satellite of Mars is the set containing only Deimos and Phobos
    • a formal theory that includes among its theorems all the theorems of a given theory
    Extension (noun) Definition, Meaning & Examples

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