1. (n.) One versed in natural science; a student of natural history, esp. of the natural history of animals.

2. (n.) One who holds or maintains the doctrine of naturalism in religion.

Marxist anatomist bacteriologist biochemist biologist biometrist biophysicist botanist commonsense philosopher cytologist dialectical materialist ecologist epistemological realist geneticist materialist natural realist natural scientist physicist physiologist realist zoologist