study of the literary works of ancient Greece and Rome

any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection)

any disorder (as sudden confusion or disorientation) in an otherwise normal person that is due to reversible (temporary) impairment of brain tissues (as by head injuries or drugs or infection)

a serious (often fatal) disease of the immune system transmitted through blood products especially by sexual contact or contaminated needles