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English definition of “Carboniferous”

Carboniferous

adjective uk   /ˌkɑː.bəˈnɪf.ər.əs/ us    /ˌkɑːr.bəˈnɪf.ɚ-/ specialized
from or referring to the period of time, between around 363 and 290 million years ago, when the first reptiles appeared and there were forests covering large areas that later formed Earth's coal layers: the Carboniferous period Carboniferous rocks
the Carboniferous
noun [S]
the Carboniferous period
(Definition of Carboniferous adjective from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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