adjunction

 
Pronunciation: /əˈdʒʌŋkʃ(ə)n/

noun

[mass noun]
  • 1 Mathematics the joining of two sets which without overlapping jointly constitute a larger set, or the relation between two such sets.
  • 2 Logic the asserting in a single formula of two previously asserted formulae.

Origin:

late 16th century: from Latin adjunctio(n)-, from the verb adjungere (see adjoin)