Dictionary

coalification

noun coal·i·fi·ca·tion \ˌkō-lə-fə-ˈkā-shən\

Definition of COALIFICATION

:  a process in which vegetable matter becomes converted into coal of increasingly higher rank with anthracite as the final product
coal·i·fy \ˈkō-lə-ˌfī\ transitive verb

First Known Use of COALIFICATION

1911

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April 27, 2015
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