In this subtitle the following words have the meanings indicated. “Day care center for adults” means a place that: Is operated to provide, with or without charge, care for medically handicapped adults; and Either is: Designated for group day care for 4 or more medically handicapped adults; or A family home that provides day care for 2 or 3 medically handicapped adults. “Medically handicapped adult” means an individual who: Is 16 years old or older; Lives alone or with a spouse, relative, or friend; and Has a disability that is: A reasonably static physical impairment that prevents gainful employment or the accomplishment of the routine of normal daily activities outside of an institutional or sheltered environment; or A permanent or recurrent mental impairment that requires domiciliary or institutional care in a sheltered environment.