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wood coal

DEFINITIONS OF: wood coal

1

n 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

n 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
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