Merriam-Webster Collegiate Dictionary - conjunct

 I. adjective  Etymology: Middle English, from Latin ~us, past participle of conjungere  Date: 15th century  1. united, joined  2. joint  3. relating to melodic progression by intervals of no more than a major second — compare disjunct  II. noun  Date: 1667  1. something joined or associated with another; specifically one of the components of a ~ion  2. an adverb or adverbial (as so, in addition, however, secondly) that indicates the speaker's or writer's assessment of the connection between linguistic units (as clauses)