n.
Compression and hardening over long periods of time, the processes by which coal is formed from plant materials.
coalification
Dictionary:
coal·i·fi·ca·tion (kō'lə-fĭ-kā'shən)  |
| 5min Related Video: coalification |
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 | carbonization |
| Coal (mineralogy and petrology) |
| Lignite (geology and geodesy) |
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 | Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved. Read more |
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