Akademik

Cenozoic

(also Cainozoic, Caenozoic) adj. & n. Geol.
—adj. of or relating to the most recent era of geological time, marked by the evolution and development of mammals, birds, and flowers.
Usage:
Cf. Appendix II.
—n. this era (cf. MESOZOIC, PALAEOZOIC).
Etymology: Gk kainos new + zoion animal

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cenozoic

var. spelling of cæno-, cainozoic.

Useful english dictionary. 2012.