Carboniferous

UK:^*^*UK and possibly other pronunciations'carboniferous', 'Carboniferous': /ˌkɑːbəˈnɪfərəs/

US:USA pronunciation: respellingUSA pronunciation: respelling(kär′bə nif′ər əs)

Car•bon•if•er•ous (kär′bə nif′ər əs),USA pronunciation [Geol.]
adj.

Geologynoting or pertaining to a period of the Paleozoic Era, including the Pennsylvanian and Mississippian periods as epochs, occurring from 345 million to 280 million years ago. See table under geologic time.
Geology(l.c.) producing carbon or coal.

Collins Concise English Dictionary © HarperCollins Publishers::

Carboniferous /ˌkɑːbəˈnɪfərəs/ adj

of, denoting, or formed in the fifth period of the Palaeozoic era, between the Devonian and Permian periods, lasting for nearly 64 million years during which coal measures were formed

Collins Concise English Dictionary © HarperCollins Publishers::

carboniferous /ˌkɑːbəˈnɪfərəs/ adj

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