subordinating conjunction

English Thesaurus

1. a conjunction (like `since' or `that' or `who') that introduces a dependent clause (noun.communication)

hypernym	:	conjunction, conjunctive, connective, continuative,
definition	:	an uninflected function word that serves to conjoin words or phrases or clauses or sentences (noun.communication)

2. the subordination that occurs when a conjunction makes one linguistic unit a constituent of another (noun.linkdef)

hypernym	:	conjunction,
definition	:	the grammatical relation between linguistic units (words or phrases or clauses) that are connected by a conjunction (noun.linkdef)