n. [ See Citrine. ] The process by which anything becomes of the color of a lemon; esp., in alchemy, the state of perfection in the philosopher's stone indicated by its assuming a deep yellow color. Thynne. [ 1913 Webster ]

a. Of the nature of, or constituting, doctrine. [ Obs. ] Sir P. Sidney. [ 1913 Webster ]

‖n. [ F. See Doctrine. ] One who would apply to political or other practical concerns the abstract doctrines or the theories of his own philosophical system; a propounder of a new set of opinions; a dogmatic theorist. Used also adjectively; as, doctrinaire notions. [ 1913 Webster ]

☞ In french history, the Doctrinaires were a constitutionalist party which originated after the restoration of the Bourbons, and represented the interests of liberalism and progress. After the Revolution of July, 1830, when they came into power, they assumed a conservative position in antagonism with the republicans and radicals. Am. Cyc. [ 1913 Webster ]

n. A matter of doctrine; also, a system of doctrines. T. Goodwin. Sir T. Elyot. [ 1913 Webster ]

a. [ LL. doctrinalis, fr. L. doctrina: cf. F. doctrinal. See Doctrine. ] 1. Pertaining to, or containing, doctrine or something taught and to be believed; as, a doctrinal observation. “Doctrinal clauses.” Macaulay. [ 1913 Webster ]

2. Pertaining to, or having to do with, teaching. [ 1913 Webster ]

The word of God serveth no otherwise than in the nature of a doctrinal instrument. Hooker. [ 1913 Webster ]

adv. In a doctrinal manner or form; by way of teaching or positive direction. [ 1913 Webster ]

n. A doctrinaire. J. H. Newman. [ 1913 Webster ]

n. The principles or practices of the Doctrinaires. [ 1913 Webster ]

v. t. [ imp. & p. p. Indoctrinated p. pr. & vb. n. Indoctrinating. ] [ Pref. in- in + L. doctrina doctrine: cf. F. endoctriner. ] 1. To instruct in the rudiments or principles of learning, or of a branch of learning; to imbue with learning; to teach; -- often followed by in. [ 1913 Webster ]

A master that . . . took much delight in indoctrinating his young, unexperienced favorite. Clarendon. [ 1913 Webster ]

2. To instruct in, or imbue with, doctrines, principles or ideologies, especially from a specific point of view which may be partisan or biased; to strongly press one's own point of view upon. [ PJC ]

n. The act of indoctrinating, or the condition of being indoctrinated; instruction in the rudiments and principles of any science or system of belief; information. Sir T. Browne. [ 1913 Webster ]

n. A subdivision of mammals including the otters; it is not used in some classifications.
Syn. -- subfamily Lutrinae. [ WordNet 1.5 ]

a. [ L. trinus triple, trini three each, fr. tres, tria, three. See Three, and cf. Trine, a. & n., Tern, a. ] Threefold. “Trinal unity.” Milton. [ 1913 Webster ]

In their trinal triplicities on high. Spenser. [ 1913 Webster ]

‖n. [ NL. ] (Chem.) Same as Veratrine. [ 1913 Webster ]

‖n. [ NL., fr. L. vitrum glass. ] (Zool.) A genus of terrestrial gastropods, having transparent, very thin, and delicate shells, -- whence the name. [ 1913 Webster ]

n. [ It. vetro di trina glass of lace. ] A kind of Venetian glass or glassware in which white threads are embedded in transparent glass with a lacelike or netlike effect. [ Webster 1913 Suppl. ]