- The state or quality of being adequately or well qualified; ability. See Synonyms at ability.
- A specific range of skill, knowledge, or ability.
- Law The quality or condition of being legally qualified to perform an act.
- Sufficient means for a comfortable existence.
- Microbiology The ability of bacteria to be genetically transformable.
- Medicine The ability to respond immunologically to bacteria, viruses, or other antigenic agents.
- Linguistics The knowledge that enables one to produce and comprehend a language.