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1. Dictionary

   Ex·ten·sion

   /ikˈsten(t)SH(ə)n/

   

   noun

   • 1. a part that is added to something to enlarge or prolong it; a continuation: "the railroad's southern extension" Similar additionadd-onadjunctaddendumaugmentationsupplementappendageappendixannexewingsupplementary buildingell
   • ▪ a room or set of rooms added to an existing building: "they hope to demolish the store and build a bar extension" Similar additionadd-onadjunctaddendumaugmentationsupplementappendageappendixannexewingsupplementary buildingell
   • ▪ lengths of real or artificial hair woven into a person's own hair to create a long hairstyle.
   • ▪ the action or process of becoming or making something larger: "the extension of the President's powers" Similar expansionincreaseenlargementwideningbroadeningdeepeningdiversificationheighteningaugmentationenhancementamplificationdevelopmentgrowthcontinuationelongationlengtheningstretchingdrawing outOpposite shrinkingcontraction
   • ▪ an application of an existing system or activity to a new area: "direct marketing is an extension of telephone selling"
   • ▪ an increase in the length of time given to someone to hold office, complete a project, or fulfill an obligation: "the initial term of appointment is for one year, but an extension of two years is envisaged" Similar prolongationlengtheningincreaseprotractioncontinuationperpetuationpostponementdeferraldelaylonger periodmore/extra timeincreased timeadditional timeOpposite shortening
   • ▪ an optional suffix to a file name, typically consisting of a period followed by several characters, indicating the file's content or function.
   • 2. a length of electric cord that permits the use of an appliance at some distance from a fixed socket.
   • 3. an extra telephone on the same line as the main one: "you can listen on the extension in the bedroom"
   • ▪ a subsidiary telephone in a set of offices or similar building, on a line leading from the main switchboard but having its own additional number: "contact Liz McDonald on extension 3514"
   • 4. the action of moving a limb from a bent to a straight position: "seizures with sudden rigid extension of the limbs"
   • ▪ the ability of a dancer to raise one leg above their waist, especially to the side: "she has amazing extension"
   • ▪ the application of traction to a fractured or dislocated limb or to an injured or diseased spinal column to restore it to its normal position.
   • ▪ the lengthening of a horse's stride within a particular gait.
   • 5. instruction by a university or college for students who do not attend full time: "extension courses"
   • 6. the range of a term or concept as measured by the objects that it denotes or contains, as opposed to its internal content.
   • 7. the property of occupying space; spatial magnitude: "nature, for Descartes, was pure extension in space"

   Word Origin late Middle English: from late Latin extensio(n-), from extendere ‘stretch out’ (see extend).

   Derivatives

   • 1. extensional adjective

   Scrabble Points: 16

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   • X

     8

   • T

     1

   • E

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   • N

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   • S

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   • I

     1

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2. www.merriam-webster.com › dictionary › extensionExtension Definition & Meaning - Merriam-Webster

   www.merriam-webster.com › dictionary › extension

   • Cached

   Learn the various meanings and uses of the word extension, from the action of extending to the extra characters at the end of a file name. See synonyms, examples, word history, and related phrases of extension.

3. dictionary.cambridge.org › english › extensionEXTENSION | definition in the Cambridge English Dictionary

   dictionary.cambridge.org › english › extension

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   Learn the meaning of extension as a noun or adjective in different contexts, such as reach, phone, computer, hair, building, and education. See how to use extension in sentences and phrases with synonyms and antonyms.

4. dictionary.cambridge.org › english › extensionEXTENSION | English meaning - Cambridge Dictionary

   dictionary.cambridge.org › english › extension

   • Cached

   Learn the meaning of extension as a noun or adjective in different contexts, such as reach, phone, computer, hair, building, and education. See how to use extension in sentences and phrases with synonyms and antonyms.

5. www.dictionary.com › browse › extensionEXTENSION Definition & Meaning | Dictionary.com

   www.dictionary.com › browse › extension

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   Extension can mean an act of extending, lengthening, or enlarging something, or an additional period of time, or a part that can be added to something. It can also refer to a property of matter, a logical class, a mathematical function, or a computer file type.

6. www.vocabulary.com › dictionary › extensionExtension - Definition, Meaning & Synonyms | Vocabulary.com

   www.vocabulary.com › dictionary › extension

   Definitions of extension. noun. act of expanding in scope; making more widely available. “ extension of the program to all in need” see more. noun. amount or degree or range to which something extends. “the wire has an extension of 50 feet” synonyms: lengthiness, prolongation. see more. noun. an addition to the length of something.

7. www.oxfordlearnersdictionaries.com › definitionextension noun - Definition, pictures, pronunciation and ...

   www.oxfordlearnersdictionaries.com › definition

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   Learn the meaning and usage of the word extension in different contexts, such as increasing influence, building, extra time, phone, hair, college, computing and electrical. See pictures, pronunciation, idioms and collocations with extension.

8. www.thefreedictionary.com › extensionExtension - definition of extension by The Free Dictionary

   www.thefreedictionary.com › extension

   • Cached

   Extension is a noun that can mean the act of extending, the condition of being extended, or something that extends something else. It can also refer to a delay, a program, a property, a logic concept, or a computer file type.