单词	Cenozoic
释义	Cenozoic adjective Ce·​no·​zo·​ic ˌsē-nə-ˈzō-ik  ˌse- : of, relating to, or being an era of geologic history that extends from the beginning of the Tertiary (see tertiary entry 1 sense 2) period to the present time and is marked by a rapid evolution of mammals and birds and of angiosperms and especially grasses and by little change in the invertebrates also : relating to the corresponding system of rocks see Geologic Time Table Cenozoic noun Word History Etymology Greek kainos + English -zoic First Known Use 1863, in the meaning defined above Kids Definition Cenozoic noun Ce·​no·​zo·​ic ˌsē-nə-ˈzō-ik  ˌse- : an era of geological history lasting from 70 million years ago to the present time in which there has been a rapid evolution of mammals and birds and of flowering plants
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