1. the capacity to move or be moved, such as the ability of people to transport themselves between home and work or community facilities by such means as walking, driving a car, or traveling by public transportation. See also motility.

2. the ability of an infant to creep, crawl, walk, or otherwise move through space.

3. in sociology, the extent to which individuals are able to move between localities, occupations, or social classes. See geographical mobility; social mobility. See also horizontal mobility; vertical mobility. —mobile adj.