coalify
/ˈkoʊlɪfaɪ/
verb
- To turn plant material into coal over millions of years through heat and pressure.
- Scientists study how organic matter can coalify under different temperature conditions.
- Over millions of years, the buried swamp plants began to coalify into peat and then lignite.
- The process of coalifying ancient forests created the coal seams we mine today.
Synonyms