Lewis & Short

Sogdĭāna rĕgĭo, a district in Asia between the Jaxartes and the Oxus, Curt. 7, 10, 1 sqq.
Hence, Sogdĭāni, ōrum, m., the inhabitants of Sogdiana, Curt. 7, 4, 5; 9, 2, 24; Plin. 6, 16, 18, § 49; called also Sugdĭāni, Mel. 1, 2, 5; 3, 5, 6.