1. the quality of being able to perform; a quality that permits or facilitates achievement or accomplishment
2. possession of the qualities (especially mental qualities) required to do something or get something done
danger heightened his powers of discrimination
3. The quality or state of being able; power to perform, whether physical, moral, intellectual, conventional, or legal; capacity; skill or competence in doing; sufficiency of strength, skill, resources, etc.; -- in the plural, faculty, talent.