Definition of "obliquity" in English

noun

1. The quality of being oblique in direction, deviating from the horizontal or vertical; or the angle created by such a deviation.

2. (astronomy, by extension, of a planet) Axial tilt.

3. Mental or moral deviation or perversity; immorality.

4. The quality of being obscure, oftentimes willfully, sometimes as an exercise in euphemism.