https://doi.org/10.1351/goldbook.11175
- Removal of mineralized tissue by natural processes, as in the breakdown of bone by osteoclasts or the disappearance of a tooth.
- Disintegration and assimilation of an embryo or fetus through a natural process involving lysis and removal of all the products of conception by cells of the maternal immune system.
- In multigestational pregnancies, death of one fetus followed by absorption of its tissue by another, sometimes referred to as a "vanishing twin".