car ‧ bon ‧ if ‧ er ‧ ous /ˌkɑːbəˈnɪf ə rəs◂ $ ˌkɑːr-/ BrE AmE adjective technical
[ Date: 1700-1800 ; Origin: carbon + -iferous 'containing, producing' (from Latin -fer ) ]
producing or containing carbon or coal:
carboniferous rocks
car ‧ bon ‧ if ‧ er ‧ ous /ˌkɑːbəˈnɪf ə rəs◂ $ ˌkɑːr-/ BrE AmE adjective technical
[ Date: 1700-1800 ; Origin: carbon + -iferous 'containing, producing' (from Latin -fer ) ]
producing or containing carbon or coal:
carboniferous rocks
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012