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inclusion

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inclusion

  • /ɪnˈkluːʒən/

Rhymes with -uːʒən

Where it comes from

Borrowed from Latin inclūsiō, inclūsiōnis, from the verb Latin inclūdō (“to shut in, enclose, insert”), from in- (“in”) + claudō (“to shut”), ultimately from Proto-Indo-European *kleh₂w- (“key, hook, nail”). By surface analysis, include + -sion. Doublet of enclosure.

noun inclusions · enclusion

  1. countable An addition or annex to a group, set, or total. The poem was a new inclusion in the textbook.
  2. uncountable The act of including, i.e. adding or annexing, (something) to a group, set, or total. The inclusion of the poem added value to the course.
  3. countable Anything foreign that is included in a material.
  4. countable Any material that is trapped inside a mineral during its formation, as a defect in a precious stone. The fewer inclusions a diamond has, the better is its clarity and value. Often the inclusions can be cut out of a diamond in the rough.
  5. countable, uncountable A nuclear or cytoplasmic aggregate of stainable substances.
  6. countable, uncountable An object completely inside a tissue, such as epidermal inclusion cyst, a cyst in the epidermis.
  7. countable, uncountable A mapping where the domain is a subset of the image.
  8. countable, obsolete, uncountable Restriction; limitation.

Opposite: exclusion

Thesaurus

Closest in meaning: comprehension, inclusion body, include, incorporate, integrating, integration, accession, integrate, integrated, add, cohesion, involve, addition, joining, integrative, classification

noun

Opposite: exclusion

Translations

Every language

noun addition or annex to a group, set or total

한국어포함 poham
Kiswahilijumuisho
Portuguêsinclusão
Françaisinclusion
DeutschEinschluss, Hinzufügung
Italianoinclusione, aggiunta
Русскийвключе́ние vključénije

noun act of including, i.e. adding or annexing, (something) to a group, set or total

Españolinclusión
Kiswahilijumuisho
Portuguêsinclusão
Françaisinclusion
DeutschEinschluss
Italianoinclusione
Ελληνικάπροσθήκη prosthíki
Русскийвключе́ние vključénije

noun defect in precious stone

Españolinclusión
DeutschEinschluss
Italianoimpurità

noun aggregate of stainable substances

Españolinclusión
Portuguêsinclusão
Françaisinclusion
Italianoinclusione

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Cite this
MLA

"inclusion." Wiktionary, via Micwyn, micwyn.com/word/inclusion. Accessed 6 Nov. 2026.

APA

inclusion. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/inclusion

Chicago

"inclusion." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/inclusion.

BibTeX
@misc{inclusion_2026,
  title = {inclusion},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/inclusion},
  urldate = {2026-11-06}
}