(~s)
1.
Evolution is a process of gradual change that takes place over many generations, during which species of animals, plants, or insects slowly change some of their physical characteristics.
...the ~ of plants and animals.
...human ~.
N-UNCOUNT
2.
Evolution is a process of gradual development in a particular situation or thing over a period of time. (FORMAL)
...a crucial period in the ~ of modern physics.
= development
N-VAR: usu with supp