Ordain \Or*dain"\, v. t. [imp. & p. p. {Ordained}; p. pr. & vb. n. {Ordaining}.] [OE. ordeinen, OF. ordener, F. ordonner, fr. L. ordinare, from ordo, ordinis, order. See {Order}, and cf. {Ordinance}.] 1. To set in order; to arrange according to rule; to regulate; to set; to establish. ``Battle well ordained.'' --Spenser. [1913 Webster] The stake that shall be ordained on either side. --Chaucer. [1913 Webster] 2. To regulate, or establish, by appointment, decree, or law; to constitute; to decree; to appoint; to institute. [1913 Webster] Jeroboam ordained a feast in the eighth month. --1 Kings xii. 32. [1913 Webster] And doth the power that man adores ordain Their doom ? --Byron. [1913 Webster] 3. To set apart for an office; to appoint. [1913 Webster] Being ordained his special governor. --Shak. [1913 Webster] 4. (Eccl.) To invest with ministerial or sacerdotal functions; to introduce into the office of the Christian ministry, by the laying on of hands, or other forms; to set apart by the ceremony of ordination. [1913 Webster] Meletius was ordained by Arian bishops. --Bp. Stillingfleet. [1913 Webster]