1. The quality of being able to perform; a quality that permits or facilitates achievement or accomplishment
   "Her ability to solve complex problems quickly impressed her colleagues"
    
2. Possession of the qualities (especially mental qualities) required to do something or get something done
   "danger heightened his abilities of discrimination";
   - power

Derived forms: abilities

See also: able, unable

Type of: cognition, noesis [technical], quality

Antonym: inability

Encyclopedia: Ability