Mesozoic (adj.)youdaoicibaDictYouDict[Mesozoic 词源字典]
1840, from Greek mesos "middle" (see meso-) + zoe "life" (see zoo) + -ic. Name coined by British geologist John Phillips for the fossil era "between" the Paleozoic and the Cenozoic.[Mesozoic etymology, Mesozoic origin, 英语词源]