mammalogist|mæˈmælədʒɪst| [f. mammalogy + -ist; after F. mammalogiste.] One versed in mammalogy. 1839Penny Cycl. XIV. 353/1 Aldrovandus, Jonston, and the rest of that class of mammalogists, seem to have followed Gesner.1883Academy 1 Dec. 365/3 [Cites the word as a ‘neologism’ from Encycl. Americana].