inclusion

noun

in·​clu·​sion in-ˈklü-zhən 

1

: the act of including : the state of being included

inclusion of all expenses in the statement

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

: the act or practice of including students with disabilities with the general student population

Inclusion refers to a variety of integration approaches, but the goal is to blend special education students into the traditional classroom.

—Suevon Lee

—sometimes used before a noun

an inclusion classroom/school

4

: the act or practice of including and accommodating people who have historically been excluded (as because of their race, gender, sexuality, or ability)

promoting inclusion in the workplace

… academic libraries have traditionally struggled to address problems of equity, diversity and inclusion. The low representation of people of color in library staff has been a particular shortcoming, despite many initiatives to attract minority staff to the field.

—Lindsay McKenzie

Tech workers say they are more interested in diversity and are more willing to work to promote inclusion in their workplace …

—Jessica Guynn

Meaningful civic inclusion even now eludes many of our fellow citizens who are recognizably of African descent.

—Glenn C. Loury

5

mathematics : a relation between two classes (see class sense 3c) that exists when all members of the first class are also members of the second compare membership sense 3

inclusionary

in-ˈklü-zhə-ner-ē 

adjective

Examples of inclusion in a Sentence

Recent Examples on the Web

Prospective grantees are required to devote a portion of their application to demonstrating their commitment to diversity, equity, and inclusion. —Robert Schmad, The Washington Examiner, 14 Dec. 2025

Captured by the legendary late bootlegger Mike Millard and well-known in the grey market, it’s been spruced up by Steven Wilson for inclusion on the set, marking its first-ever official release. —Gary Graff, Billboard, 12 Dec. 2025

Tonya Jones, assistant chair of the Mosier Valley Property Owners Association, says the community wants to explore the inclusion of Mosier Valley on possible Juneteenth tours to explore its history and origins. —Kamal Morgan, Fort Worth Star-Telegram, 12 Dec. 2025

No longer seen as just a niche, prestige title, Clair Obscur rose to prominence thanks to strong word-of-mouth and its inclusion on the Xbox Game Pass Service, which allowed regular gamers and critics alike to try the game out without committing to a full purchase. —James Perkins Mastromarino, NPR, 12 Dec. 2025

Word History

Etymology

Latin inclusion-, inclusio, from includere

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing inclusion

• diversity, equity, and inclusion
• inclusion body

Rhymes for inclusion

• allusion
• collusion
• conclusion
• confusion
• contusion
• delusion
• diffusion
• effusion
• exclusion
• extrusion
• illusion
• infusion

Kids Definition

inclusion

noun

in·​clu·​sion in-ˈklü-zhən 

1

: the act of including : the state of being included

2

: something that is included

Medical Definition

inclusion

noun

in·​clu·​sion in-ˈklü-zhən 

: something that is included

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