adj. 2.  a.  Having no special ability, quality, or purpose: ordinary people; ordinary black tea. b.  Not particularly good; not better than average: The service was good, but the food was very ordinary. 3.  Law   Having direct authority to decide a case, rather than being delegated that power, as a judge. 4.  Mathematics   Designating a differential equation containing no more than one independent variable. n. pl.   or·di·nar·ies  1.  The usual or normal condition or course of events: Nothing out of the ordinary occurred. 2.  Law   A judge with direct authority as opposed to delegated authority to decide a case. 3.  often  Ordinary Ecclesiastical   a.  The parts of the Mass that remain unchanged from day to day. b.  A division of the Roman Breviary containing the unchangeable parts of the office other than the Psalms. c.  A cleric, such as the residential bishop of a diocese, with ordinary jurisdiction over a specified territory. 4.  Heraldry   One of the simplest and commonest charges, such as the bend and the cross. 5.  Chiefly British   a.  A complete meal provided at a fixed price. b.  A tavern or inn providing such a meal. [Middle English ordinarie, from Old French, from Latin ōrdinārius, from ōrdō, ōrdin-, order; see  ar- in the Appendix of Indo-European roots.] or′di·nari·ness n.  | 
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