Definition:

The term “Outgroup” refers to a social psychological concept that classifies people or groups who do not belong to a particular individual’s or group’s primary or reference group.

Markup formatting:

The definition of “Outgroup” can be written using HTML markup tags for formatting. The <h2> tag can be used to create a subheading for “Definition,” and the <p> tag can be used to enclose the actual definition text.