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sub- +‎ Carboniferous

Proper noun[edit]


  1. (geology) The lowest division of the Carboniferous formations underlying the proper coal measures; a marine formation characterized in general by beds of limestone.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for Subcarboniferous in
Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.)