(countable) A spoken test or examination, particularly in a language class. / (countable, usually in the plural) A physical examination of the mouth. / (uncountable, informal) Ellipsis of oral sex..

One complete circuit round an orbited body. / (uncountable) The state of moving in an orbit. / (physics) The path of an electron around an atomic nucleus.

(astronomy) To circle or revolve around another object or position. / To place an object (e.g. a satellite) into an orbit around a planet. / To move around the general vicinity of something.

The larger part of an organism, composed of tissues that perform similar functions. / (by extension) A body of an organization dedicated to the performing of certain functions.

(obsolete, transitive) To supply with an organ or organs; to fit with organs.

Rock or other material that contains valuable or utilitarian materials; primarily a rock containing metals or gems for which it is typically mined and processed.

(mathematics, of a number) Indicating position in a sequence. / (taxonomy) Pertaining to a taxon at the rank of order. / (nautical) Intercardinal.

An ordinal number such as first, second and third. / 2005, F. M. Wheelock, Wheelock’s Latin, 6th edition, revised, page 97:

(countable) Arrangement, disposition, or sequence. / (countable) A position in an arrangement, disposition, or sequence. / (uncountable) The state of being well arranged.

(transitive) To set in some sort of order. / (transitive) To arrange, set in proper order. / (transitive) To issue a command to.