[-ING2.] That subordinates; involving subordination. Subordinating conjunction (Gram.), one that serves to join a subordinate to a principal clause.
1753. [see SUBORDINATED ppl. a.].
1850. Grote, Greece, II. lxiv. VIII. 281. Constant subordinating control.
1857. J. W. Gibbs, Philol. Studies, 116. The subordinative or subordinating proposition.
1875. Whitney, Life Lang., xii. 241. Relatives and subordinating conjunctions are wanting.