(countable) The determination of the relative position of something or someone.

(countable) The relative physical position or direction of something.

(uncountable) The construction of a Christian church to have its aisle in an east-west direction with the altar at the east end.

(countable) An inclination, tendency or direction.

(countable) The ability to orient, or the process of so doing.

(countable) An adjustment to a new environment.

(countable) An introduction to a new environment, specifically events or activities designed to familiarize new students with a school.

(typography, countable) The direction of print across the page; landscape or portrait.

(LGBT) Ellipsis of sexual orientation.

(mathematical analysis, differential geometry, countable) The choice of which ordered bases are "positively" oriented and which are "negatively" oriented on a real vector space.

(analytic geometry, topology, countable) The designation of a parametrised curve as "positively" or "negatively" oriented (or "nonorientable"); the analogous description of a surface or hypersurface.