1) Activity 2) Bodily function 3) Bodily process 4) Body process 5) Opsonization 1) Opsonization 
A process through which a cell or microbe is treated with opsonin to make it more vulnerable to being engulfed by a phagocyte. Often done simply by incubating particles (e.g. Zymosan) with fresh serum. ... (13 Oct 1997) ... 
a process where opsonins (serum components) render bacteria more attractive to phagocytes by attaching to their outer surface and altering their physical and chemical compositions.
Modification of the surface characteristics of an invading particle or organism by binding with antibody or a non-specific molecule in such a way to increase susceptibility of the cell to phagocytosis.