outgroup

English

Etymology

From out- +‎ group.

Noun

outgroup (plural outgroups)

  1. (sociology) The group of people who do not belong to one's own social group.
  2. (systematics) In cladistics, all the taxa included in a study that do not belong to the ingroup that is of immediate interest.
    • 2009 January 15, Martin D. Brazeau, “The braincase and jaws of a Devonian 'acanthodian' and modern gnathostome origins”, Nature Volume 457 No. 7227, doi:10.1038/nature07436:
      A cladistic analysis of 45 ingroup and two outgroup taxa was performed on the basis of 134 characters.

Antonyms

Verb

outgroup (third-person singular simple present outgroups, present participle outgrouping, simple past and past participle outgrouped)

  1. To form an outgroup.
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