say it: see-nuh-ZOH-ik
cenozoic is a noun and adjective meaning "approximately the last 63 million years". It carries 2 recorded senses.
approximately the last 63 million years
of or relating to or denoting the Cenozoic era
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for cenozoic come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.