naturalist

n.	1.	One versed in natural science; a student of natural history, esp. of the natural history of plants or animals; a botanist or zoologist.
	2.	One who holds or maintains the doctrine of naturalism in religion.

Noun	1.	naturalist - an advocate of the doctrine that the world can be understood in scientific terms
	2.	naturalist - a biologist knowledgeable about natural history (especially botany and zoology) Synonyms: natural scientist

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