GEOLOGICAL ERA

Pronunciation (US): (GB):

Meaning:

A major division of geological time; an era is usually divided into two or more periods

Synonyms:

era; geological era

Classified under:

Nouns denoting time and temporal relations

Hypernyms ("geological era" is a kind of...):

geologic time; geological time (the time of the physical formation and development of the earth (especially prior to human history))

Meronyms (parts of "geological era"):

geological period; period (a unit of geological time during which a system of rocks formed)

Instance hyponyms:

Age of Mammals; Cenozoic; Cenozoic era (approximately the last 63 million years)

Age of Reptiles; Mesozoic; Mesozoic era (from 230 million to 63 million years ago)

Paleozoic; Paleozoic era (from 544 million to about 230 million years ago)

Holonyms ("geological era" is a part of...):

aeon; eon (the longest division of geological time)