brontosaurus (n.)youdaoicibaDictYouDict[brontosaurus 词源字典]
1879, Modern Latin, from Greek bronte "thunder" (perhaps from PIE imitative root *bhrem- "to growl") + -saurus. Brontes was the name of one of the Cyclopes in Greek mythology.[brontosaurus etymology, brontosaurus origin, 英语词源]