The term PREFIX WITH MED OR LAW is referring to the prefix 'pre-' which can be added to either 'med' or 'LAW' to form two words. The prefix 'pre-' means before or in front of, so when added to 'med' it forms the word 'premed, ' which is a term used to describe someone who has completed some medical training but is not yet a doctor. When added to 'LAW, ' it forms the word 'prelaw, ' which is a term used to describe someone who has completed some legal training but is not yet a lawyer.