PALEOZOIC

Paleozoic

(adjective) of or relating to or denoting the Paleozoic era

Paleozoic, Paleozoic era

(noun) from 544 million to about 230 million years ago

Source: WordNet® 3.1

Adjective

paleozoic (not comparable)

Alternative form of Paleozoic

Etymology

Adjective

Paleozoic (comparative more Paleozoic, superlative most Paleozoic)

(geology) Of a geologic era within the Phanerozoic eon that comprises the Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Permian periods from about 542 to 250 million years ago, from the age of trilobites to that of reptiles.

Proper noun

Paleozoic

(geology) The Paleozoic era.

Source: Wiktionary

Pa`le*o*zo"ic, a. Etym: [Paleo- + Gr. (Geol.)

Definition: Of or pertaining to, or designating, the older division of geological time during which life is known to have existed, including the Silurian, Devonian, and Carboniferous ages, and also to the life or rocks of those ages. See Chart of Geology.

Source: Webster’s Unabridged Dictionary 1913 Edition