Roget's Thesaurus: Entry 368 (The science of animals)

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#368. [The science of animals.] Zoology. -- N. zoology, zoonomy[obs], zoography[obs], zootomy[obs]; anatomy; comparative anatomy; animal physiology, comparative physiology; morphology; mammalogy.

anthropology, ornithology, ichthyology, herpetology, ophiology[obs], malacology[obs], helminthology[Med], entomology, oryctology[obs], paleontology, mastology[obs], vermeology[obs]; ichthy &c. ichthyotomy[obs]; taxidermy.

zoologist &c.

Adj. zoological &c. n.