Of or pertaining to the occident or west; of, pertaining to, or characteristic of those countries or parts of the earth which lie to the westward.Specifically [cap. or lowercase] — Pertaining to or characteristic of those countries of Europe defined above as the Occident (see occident, 2), or their civilization and its derivatives in the western hemisphere: as, Occidental climates; Occidental gold; Occidental energy and progress.Pertaining to the countries of the western hemisphere; American as opposed to European.Setting after the sun: as, an occidental planet.Further to the west.As used of gems. having only an inferior degree of beauty and excellence; inferior to true (or oriental) gems, which, with but few exceptions, come from the East.In all meanings opposed to oriental or orient.n. [cap. or lowercase] A native or an inhabitant of the Occident or of some Occidental country: opposed to Oriental.n. Specifically— A native or an inhabitant of western Europe.n. A native or an inhabitant of the western hemisphere; an American.