atrophy

https://doi.org/10.1351/goldbook.10442
Wasting away of the body or of an organ or tissue, involving a decrease in size and (or) numbers of cells.
Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 728 [Terms] [Paper]