wood coal

/wʊd koʊl/

Other forms: wood coals

Definitions of wood coal

1. noun

   intermediate between peat and bituminous coal
   synonyms: brown coal, lignite

   types:

   jet

   a hard black form of lignite that takes a brilliant polish and is used in jewelry or ornamentation

   type of:

   coal

   fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period

   humate

   material that is high in humic acids
2. noun

   a carbonaceous material obtained by heating wood or other organic matter in the absence of air
   synonyms: charcoal

   type of:

   C, atomic number 6, carbon

   an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds

   fuel

   a substance that can be consumed to produce energy