Main Entry: hem·ad·sorp·tion Variant: or chiefly Britishhaem·ad·sorp·tion/"hE-(")mad-'sorp-sh&n, -'zorp-/ Function: noun : adherence of red blood cells to the surface of something (as a virus or cell) —hem·ad·sorb·ingor chiefly Britishhaem·ad·sorb·ing/-'sor-bi[ng], -'zor-/adjective