• (a.) See Cenozic.
Cai`no·zo'ic adjective (Geol.) See Cenozic . 
Cainozoic is a geological term applied to the latest of the three divisions into which strata have been arranged, with reference to the age of the fossils they include. The Cainozoic system embraces the tertiary and post-tertiary systems of British geologists, exhibiting recent forms of life, in contradistinction to the Mesozoic, exhibiting interme...
cainozoic, cenozoic Noting or pertaining to the present era, beginning 65 million years ago and characterized by the ascendancy of mammals.