Extension meaning

ĭk-stĕn'shən
The definition of an extension is an addition such as to a building, an extra phone line connected to the main line or an extra amount of time given to someone to pay a debt.

An example of an extension is adding a second story to a single story house.

An example of an extension is line two on a business line.

An example of an extension is someone getting an extra fifteen days to pay their electric bill.

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The amount, degree, or range to which something extends or can extend.

The wire has an extension of 50 feet.

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The application of traction to a fractured or dislocated limb to restore the normal position.
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The property of an object by which it occupies space.
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A branch of a university for students who cannot attend the university proper.
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A length of human or synthetic hair attached to the scalp or to strands of hair close to the scalp to add volume, length, or color.
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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, filenames having the extension .EXE are executable files.

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The class of objects designated by a specific term or concept; denotation.
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A set that includes a given and similar set as a subset.
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An extending or being extended.
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The amount or degree to which something is or can be extended; range; extent.
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A part that forms a continuation or addition.

An extension to a factory.

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An extra period of time allowed a debtor for making payment.
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A length of natural or synthetic hair added to a person's hair, as by weaving, gluing, or attaching with a comb at the scalp, to create a longer or fuller style.
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The class of all particular objects to which a term refers; denotation.
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That property of a body by which it occupies space.
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Designating a device that can be extended or that extends something else.

Extension ladder, extension cord.

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The application of traction to a fractured or dislocated limb to restore the normal position.
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A set that includes a given and similar set as a subset.
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A set of characters that follow a filename and are separated from it by a period, used to identify the kind of file.
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The act of extending or the state of being extended; a stretching out; enlargement in breadth or continuation of length; increase; augmentation; expansion.
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That property of a body by which it occupies a portion of space (time, e.g. "spatiotemporal extension")
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(semantics) Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension.
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(banking, finance) A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
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(medicine) The operation of stretching a broken bone so as to bring the fragments into the same straight line.
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(weightlifting) An exercise in which an arm or leg is straightened against resistance.
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(fencing) A simple offensive action, consisting of extending the weapon arm forward.
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(telecommunications) A numerical code used to specify a specific telephone in a telecommunication network.
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(computing) A file extension.

Files with the .txt extension usually contain text.

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(computing) An optional software component that adds functionality to an application.

A browser extension.

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The act of extending or the condition of being extended.

The extension of the subway into the suburbs.

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Origin of extension

  • Middle English extensioun from Old French extension from Latin extēnsiō extēnsiōn- from extēnsus past participle of extendere to extend extend
    From American Heritage Dictionary of the English Language, 5th Edition
  • From Old French extension, from Latin extensio
    From Wiktionary