faculty /fak′əltē/ [L, facultas, capability] , 1. any normal physiological function or natural ability of a living organism, such as the digestive faculty or the ability to perceive and distinguish sensory stimuli. 2. an ability to do something specific, such as learn languages or remember names. 3. any mental ability or power, such as memory or thought. 4. a department in an institution of learning or the people who teach in a department of such an institution.