英语词源字典 - 在线词源网站

guanine (n.)[guanine 词源字典]: 1846, from guano, from which the chemical first was isolated, + chemical suffix -ine (2).[guanine etymology, guanine origin, 英语词源]
guano (n.): c. 1600, from Spanish guano "dung, fertilizing excrement," especially of sea-birds on islands off Peru, from Quechua huanu "dung."
iguana (n.): 1550s, from Spanish, from Arawakan (W.Indies) iguana, iwana, the local name for the lizard.
Foure footed beastes ... named Iuannas, muche lyke vnto Crocodiles, of eyght foote length, of moste pleasaunte taste. [Richard Eden, "Decades of the New World," 1555]
Iguanodon (n.): dinosaur name, 1825, hybrid from iguana + stem of Greek odonys "tooth" (on model of mastodon). So called because the fossil teeth and bones were thought to resemble those of the lizard.