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Word of the Day Wednesday, June 10, 2026

carboniferous

/kɑrbənɪˈfɛrəs/ adjective · British & US
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What does carboniferous mean?

adjective

Relating to coal or to the geological period in which coal was formed, roughly from 359 to 299 million years ago.

Example

"The carboniferous forests that once covered the continent are now fossilized and preserved in the rock record."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for carboniferous

Antonyms of carboniferous

Rhymes with carboniferous

Etymologically related