Definition of: personality

(pûr′sən·al′ə·tē) noun plural ·ties
1. That which constitutes a person; also, that which distinguishes and characterizes a person; personal existence.
2. Anything said of a person, especially if disparaging: usually in the plural: offensive personalities.
3. A person, especially one of exceptional qualities.
—double or multiple personality Psychiatry A condition in which two or more relatively distinct sets of experiences and behavior patterns reveal themselves alternately in the same individual. See synonyms under CHARACTER. [<OF personalité <Med. L personalitas, -tatis <LL personalis of a person]