1. A physical tilt or bend
  2. A slant or slope
  3. A mental tendency
  4. The angle of intersection of a reference plane
    ''The astronomer calculated the inclination of the equator or ecliptic of Earth and the orbital planes of each visible heavenly body.
    Artillery must take account of a weapon's precise inclination.
  5. A person or thing loved or admired.

The above text is a snippet from Wiktionary: inclination
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