D defs.my
Entry 2 senses Webster, 1913

naturalist

· nat·u·ral·ist · IPA /nˈætʃərələst/
01 n. One versed in natural science; a student of natural history, esp. of the natural history of plants or animals; a botanist or zoologist.
  1. 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. 2.
    One who holds or maintains the doctrine of naturalism in religion.