Pronunciation: (in"klu-nā'shun),[key] —n. 1. a disposition or bent, esp. of the mind or will; a liking or preference: Much against his inclination, he was forced to resign. 2. something to which one is inclined: In sports his inclination is tennis. 3. the act of inclining; state of being inclined.
4. a tendency toward a certain condition, action, etc.: the door's inclination to stick. 5. deviation or amount of deviation from a normal, esp. horizontal or vertical, direction or position.
6. an inclined surface.
7. Geom. a. the angle between two lines or two planes.
b. the angle formed by the x-axis and a given line.
8. Astron. a. the angle between the orbital plane of a planet and another given plane, usually the ecliptic.
b. the angle between the equatorial and orbital planes of a planet.
9. Magnetism.dip (def. 32).