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ordination the act or ceremony of ordaining or the state of being ordained.
ordnance military weapons and their attendant supplies and equipment. [2 definitions]
Ordovician of, relating to, or designating the geological period between the Cambrian and Silurian of the Paleozoic Era, from approximately 500 million to 440 million years ago, when marine invertebrate animals were abundant. [2 definitions]
ordure solid excrement; dung.
öre the smaller monetary unit of Sweden, Denmark, and Norway. (Cf. krona, kroner, krone.)
Ore. an abbreviation for Oregon.
ore a mineral or rock substance from which a metal or other useful element or compound can be extracted.
oregano a plant related to mint and marjoram that is dried and used as a seasoning.
Oregon a northwestern U.S. state on the Pacific coast between Washington and California. (abbr.: OR)
or else or you will be sorry.
Orestes in the ancient Greek dramatic trilogy The Oresteia by Aeschylus, the protagonist, who avenges his father's death by killing his mother and her lover.
organ a musical instrument consisting of a keyboard attached to a device that forces air through a number of pipes to produce a wide range of sounds; pipe organ. [4 definitions]
organ donor one who agrees to have a bodily organ or organs removed, either before or after death, to be used in organ transplant or for medical research.
organdy a fine, stiff, translucent cotton fabric used for blouses, curtains, and the like.
organelle a discrete structure within a cell, such as a nucleus, that has a specialized, organlike function.
organ grinder a person who plays a hand organ or hurdy-gurdy on the streets to earn money.
organic of, affecting, or relating to an organ of a plant or animal. [6 definitions]
organically in an organic way.
organism any single living being, such as an animal, plant, fungus, or bacterium. [2 definitions]
organist a person who plays the organ.
organization the act or process of organizing. [3 definitions]