margination

noun
mar·​gin·​ation | \ ˌmär-jə-ˈnā-shən How to pronounce margination (audio) \

Medical Definition of margination

1 : the act or process of forming a margin specifically : the adhesion of white blood cells to the walls of damaged blood vessels
2 : the action of finishing a dental restoration or a filling for a cavity margination of an amalgam with a bur