in·​clu·​sion | \in-ˈklü-zhən \

Definition of inclusion 

1 : the act of including : the state of being included

2 : something that is included: such as

a : a gaseous, liquid, or solid foreign body enclosed in a mass (as of a mineral)

b : a passive usually temporary product of cell activity (such as a starch grain) within the cytoplasm or nucleus

3 : a relation between two classes that exists when all members of the first are also members of the second — compare membership sense 3

4 : the act or practice of including students with disabilities in regular school classes

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Other Words from inclusion

inclusionary \ in-​ˈklü-​zhə-​ner-​ē \ adjective

Examples of inclusion in a Sentence

Recent Examples on the Web

The inclusion of Bronico and Aleksandar Katai in the second half gave the Fire some offensive life, as the visiting side come close to evening the score on a couple of occasions early on in the second half. Juan Pimiento,, "10-man Chicago Fire drop their 3rd straight against FC Dallas," 14 July 2018 Vudu also offers a selection of movies that are free with the inclusion of ads. Kim Komando, USA TODAY, "Is Netflix best bet for cord-cutters or should you consider Amazon, Hulu or Vudu?," 13 July 2018 Pineault also criticized the inclusion of a letter from a psychiatrist that the man filed to support his claims that revealing his name would be detrimental. Matt Stout,, "Lawyers for Rosenberg, Hefner say releasing accuser’s name would level ‘playing field’," 12 July 2018 The Aurora City Council recently sent a letter objecting to the inclusion of a citizenship question on the 2020 census form. Jack Healy, New York Times, "If Demographics Are Destiny, Why Can’t Democrats Win This Denver District?," 2 July 2018 But with the deliberate inclusion of vitamin C in its blend, Supergoop boosts the antioxidant powers of this highly defensive sunblock. Adam Hurly, GQ, "The Best Vitamin C Products for Having Clear, Healthy Skin," 29 June 2018 Trump critics saw the inclusion of those two countries as a strategy to weaken legal challenges that centered on the claim that the ban unlawfully targeted a religious group that Trump had vowed to keep out of the country. Laurence Arnold,, "Who's Welcome (or Not) in U.S. After Trump Ban Upheld," 27 June 2018 The inclusion of Native corporations in the 8a program is not without controversy. Erica Martinson, Anchorage Daily News, "Under rule change, Alaska Native corporations could once again get high-dollar government contracts," 26 June 2018 Still, lobbyists for local governments and school districts opposed the inclusion of new labor laws in the state budget. Adam Ashton, sacbee, "With court case looming, California unions pack state budget with labor goodies," 22 June 2018

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

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First Known Use of inclusion

15th century, in the meaning defined at sense 1

History and Etymology for inclusion

Latin inclusion-, inclusio, from includere

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Statistics for inclusion

Last Updated

25 Oct 2018

Look-up Popularity

Time Traveler for inclusion

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

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More Definitions for inclusion


in·​clu·​sion | \in-ˈklü-zhən \

Kids Definition of inclusion

1 : an act of taking in as part of a whole : the state of being taken in as part of a whole She suggested inclusion of an entry.

2 : something taken in as part of a whole


in·​clu·​sion | \in-ˈklü-zhən \

Medical Definition of inclusion 

: something that is included especially : a passive usually temporary product of cell activity (as a starch grain) within the cytoplasm or nucleus

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