BROWN COAL

Pronunciation (US): (GB):

Meaning:

Intermediate between peat and bituminous coal

Synonyms:

brown coal; lignite; wood coal

Classified under:

Nouns denoting substances

Hypernyms ("brown coal" is a kind of...):

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

humate (material that is high in humic acids)

Hyponyms (each of the following is a kind of "brown coal"):

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