noun /əˈbɪlɪti,əˈbɪlɪɾi/
a) 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.
This wood has the ability to fight off insects, fungus, and mold for a considerable time.
Then the disciples, every man according to his ability, determined to send relief unto the brethren.
Wikipedia foundation.