prop. a. [ NL. Dominicanus, fr. Dominicus, Dominic, the founder: cf. F. Dominicain. ] Of or pertaining to St. Dominic (Dominic de Guzman), or to the religious communities named from him. [ 1913 Webster ]

Dominican nuns, an order of nuns founded by St. Dominic, and chiefly employed in teaching. --
Dominican tertiaries the third order of St. Dominic. See Tertiary. [ 1913 Webster ]

prop. n. (Eccl. Hist.) One of an order of mendicant monks founded by Dominic de Guzman, in 1215. A province of the order was established in England in 1221. The first foundation in the United States was made in 1807. The Master of the Sacred Palace at Rome is always a Dominican friar. The Dominicans are called also preaching friars, friars preachers, black friars (from their black cloak), brothers of St. Mary, and in France, Jacobins. [ 1913 Webster ]