| (histology) the preservation and hardening of a tissue sample to retain as nearly as possible the same relations they had in the living body | a process involving fixation and dehydration and forced impregnation and hardening of biological tissues; water and lipids are replaced by curable polymers (silicone or epoxy or polyester) that are subsequently hardened |
| the activity of fastening something firmly in position | |
| an unhealthy and compulsive preoccupation with something or someone | |
| an abnormal state in which development has stopped prematurely | |