TANGENTIAL Meaning of TANGENTIAL in English [ tan'dʒɛnʃ(ə)l ]■ adjective1》 relating to or along a tangent. 2》 having only a slight connection or relevance; peripheral. 3》 diverging from a course.Derivatives~ly adverb Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004