What is the definition of "inclusion"?

The definition of the word "inclusion" as stated by the Oxford Advanced Learner's Dictionary is "the action or state of including or of being included within a group or structure." The secondary definition is "a person or thing that is included within a larger group or structure."

A scientific definition of this word is also available through the Oxford dictionary. The word "inclusion" is listed as a noun. The origin of the word comes from the early 17th century and the Latin word that means "shut in." OxfordDictionary.com offers multiple example sentences, rhyming words and a link for English synonyms and British/World definitions.