Conjoin

глагол а) соединять; сочетать б) соединяться; сочетаться

Большой англо-русский словарь

Conjoin

verb Etymology: Middle English, from Anglo-French conjoindre, from Latin conjungere, from com- + jungere to join — more at yoke transitive verb to join together (as separate entities) for a common purpose intransitive verb to join together for a common purpose

Merriam-Webster's Collegiate Dictionary