How do you spell Palliation

Available Definitions:
1)  n. - The act of palliating, or state of being palliated; extenuation; excuse; as, the palliation of faults, offenses, vices.
2)  n. - Mitigation; alleviation, as of a disease.
3)  n. - That which cloaks or covers; disguise; also, the state of being covered or disguised.