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arachnologist
arachnologist n. 
/ærækˈnɒlədʒɪst/ a student of, or proficient in, arachnology. [ < ancient Greek ἀράχνη spider (see arachnid n.) + -ologist comb. form.]
/ærækˈnɒlədʒɪst/ a student of, or proficient in, arachnology. [ < ancient Greek ἀράχνη spider (see arachnid n.) + -ologist comb. form.] ΘΚΠ
the world > animals > zoology > study of specific types of animal > [noun] > spiders and other arachnids > one who
arachnologist1817
araneologist1875
1817 W. Kirby & W. Spence Introd. Entomol. II. xxiii. 345 The English Arachnologists—may I coin this term?
1880 Nature 22 Jan. 273/2 Mr. Pickard-Cambridge's reputation as an arachnologist.
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