extension

noun
ex·​ten·​sion | \ ik-ˈsten(t)-shən How to pronounce extension (audio) \

Definition of extension

1a : the action of extending : state of being extended
b : an enlargement in scope or operation tools are extensions of human hands
2a : the total range over which something extends : compass
3a : the stretching of a fractured or dislocated limb so as to restore it to its natural position
b : an unbending movement around a joint in a limb (such as the knee or elbow) that increases the angle between the bones of the limb at the joint — compare flexion sense 4a
4 : a property whereby something occupies space
5 : an increase in length of time specifically : an increase in time allowed under agreement or concession
6 : a program that geographically extends the educational resources of an institution by special arrangements (such as correspondence courses) to persons otherwise unable to take advantage of such resources
7a : a part constituting an addition
b : a section or line segment forming an additional length
c : an extra telephone connected to the principal line
d : a length of natural or synthetic hair that is worn attached to one's natural hair
e : a series of usually three or four characters following a dot at the end of the name of a computer file that specifies the file's format or purpose
8 : a mathematical set (such as a field or group) that includes a given and similar set as a subset

Examples of extension in a Sentence

extension of the patient's life He's asking for a contract extension. Make sure that the muscles get the proper amount of extension. I missed the deadline but was granted an extension.
Recent Examples on the Web As an extension of the expansive lobby, Bayou & Bottle is a festive gathering place in the heart of the hotel, and even more so on the weekends. Megha Mcswain, Chron, 15 Sep. 2022 Of course, Ferrari doesn’t like to call it an SUV, instead referring to this new model as an extension of its sports car lineup with a new form factor meant to enhance versatility and comfort. Joey Capparella, Car and Driver, 13 Sep. 2022 Additionally, as an extension of the myBlue program, the department recognized that some residents with special needs may react differently when coming in contact with officers or firefighters during an emergency situation. Alex Groth, Journal Sentinel, 12 Sep. 2022 After leaving their royal duties behind, Prince Harry’s and Meghan’s entertainment work functioned as an extension of their advocacy priorities. Erich Schwartzel, WSJ, 10 Sep. 2022 Crystal Dynamics studio head Scot Amos described the developer’s partnership with GMG as an extension of the company’s core values, pointing out that two of Crystal Dynamics’ co-founders, Judy Lang and Madeline Canepa, were women. Jonathan Lee, Washington Post, 8 Sep. 2022 The Dry Dock blowout bars aboard Virgin Voyages’ ships offer services exclusively using Kérastase products, so this serum can act as an extension of your vacation blowout, too. Kristin Corpuz, The Hollywood Reporter, 30 Aug. 2022 In an interview with The Post, Zatko described his decision to go public as an extension of his previous work exposing flaws in specific pieces of software and broader systemic failings in cybersecurity. Joseph Menn, BostonGlobe.com, 23 Aug. 2022 In an interview with The Post, Zatko described his decision to go public as an extension of his previous work exposing flaws in specific pieces of software and broader systemic failings in cybersecurity. Joseph Menn, Elizabeth Dwoskin And Cat Zakrzewski, Anchorage Daily News, 23 Aug. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'extension.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of extension

15th century, in the meaning defined at sense 1a

History and Etymology for extension

Middle English, from Late Latin extension-, extensio, from Latin extendere

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Time Traveler for extension

Time Traveler

The first known use of extension was in the 15th century

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Dictionary Entries Near extension

extensimeter

extension

extension agent

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Statistics for extension

Last Updated

24 Sep 2022

Cite this Entry

“Extension.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/extension. Accessed 4 Oct. 2022.

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More Definitions for extension

extension

noun
ex·​ten·​sion | \ ik-ˈsten-shən How to pronounce extension (audio) \

Kids Definition of extension

1 : the act of making something longer or greater extension of the sail
2 : an increase in length or time
3 : a part forming an addition or enlargement

extension

noun
ex·​ten·​sion | \ ik-ˈsten-chən How to pronounce extension (audio) \

Medical Definition of extension

1 : the stretching of a fractured or dislocated limb so as to restore it to its natural position
2 : an unbending movement around a joint in a limb (as the knee or elbow) that increases the angle between the bones of the limb at the joint — compare flexion sense 1

extension

noun
ex·​ten·​sion

Legal Definition of extension

: an increase in length of time specifically : an increase in the time allowed under an agreement

More from Merriam-Webster on extension

Nglish: Translation of extension for Spanish Speakers

Britannica English: Translation of extension for Arabic Speakers

Britannica.com: Encyclopedia article about extension

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