Etymology
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arnica (n.)
plant genus of the borage family, native to central Europe, 1753, Modern Latin, of unknown origin. Klein suggests Arabic arnabiyah, a name of a type of plant, as the ultimate source.
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ficus (n.)
c. 1400, from Latin ficus "fig, fig tree" (see fig). With capital letter, as the name of a large genus of trees and shrubs, chosen by Linnaeus (1753).
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coccus (n.)

1763 as an insect genus (including the cochineal bug and the kermes); 1883 as a type of bacterium; from Greek kokkos "grain, seed, berry" (see cocco-). Related: Coccoid.

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viburnum (n.)
genus of shrubs widespread in Eurasia and North America, the wayfaring-tree, 1731, from Latin viburnum, which is said to be probably an Etruscan word.
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Cereus (n.)

cactus genus, 1730, from Latin cereus "waxen, waxy," from cera "wax" (see cero-). So called from its shape, which suggests a wax candle.

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trichomoniasis (n.)
1915, with -iasis + trichomonas, genus of a family of flagellate parasites, from tricho-, Latinized form of Greek trikho-, combining form of thrix (genitive trikhos) "hair" + -monas.
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endorphin (n.)
"chemical which occurs naturally in the brain and works like morphine," 1975, from French endorphine. First element from endogène "endogenous, growing within" (see endo- + genus); second element from morphine.
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axolotl (n.)
genus of Mexican salamanders, 1786, from Spanish, from Nahuatl, literally "servant of water," from atl "water" + xolotl "slippery or wrinkled one, servant, slave" [see Frances Karttunen, "An Analytical Dictionary of Nahuatl"].
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Pongo (n.)

ape genus including the orangutan; 1620s as the name of a large anthropoid ape of Africa, from Kongo (Bantu) mpongi. The name later was transferred to the orangutans of Borneo (1798). Related: Pongoid.

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gardenia (n.)
shrub genus, 1757, Modern Latin, named for Scottish-born American naturalist Dr. Alexander Garden (1730-1791), Vice President of the Royal Society, + abstract noun ending -ia.
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