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carbonate
carbonate platform
carbonatite
Carbondale
carbonette
carbonic
carbonic acid
carbonic anhydrase
Carboniferous
carboniferous
carbonium ion
carbonization
carbonize
carbonless
carbonnade
carbonyl
carbonyl chloride
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Carboniferous
Car·bon·if·er·ous [ krbə níffərəss ]


noun 
Definition:
 
geologic period: the period of geologic time, 360 million to 290 million years ago, during which true reptiles first appeared and vast swamps created coal-forming sediments
[Because numerous coal deposits were formed]

Car·bon·if·er·ous adjective
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