n. pl. dis·a·bil·i·ties 1. a. A physical or mental condition that significantly limits a person's motor, sensory, or cognitive abilities.
b. The state of having such a condition: discrimination based on disability.
2. a. A program that provides financial support to people with such conditions: has been on disability for a month.
b. The economic assistance provided by such a program: has been getting disability since the accident.
3. Law Lack of legal capacity to perform some act, such as to enter into a contract, because of infancy or lack of soundness of mind.