ap·op·to·sis 
(ăp′əp-tōsĭs, ăp′ə-tō-)
(ăp′əp-tōsĭs, ăp′ə-tō-)n.
A natural process of self-destruction by degradative enzymes in certain cells, such as epithelial cells and erythrocytes, that are genetically programmed to have a limited lifespan or are damaged, as by irradiation or toxic drugs. Also called programmed cell death.
- silver bullet
- silver certificate
- silver chloride
- silver cord
- silverfish
- silver fox
- silveriness
- silver iodide
- silver lining
- silver maple
- silver mound
- silvern
- silver nitrate
- silver perch
- silver plate
- silver-plate
- silverpoint
- silver protein
- silverrod
- silver salmon
- silver screen
- silverside
- silversides
- silversmith
- silver spoon