lignite
lig-nite
noun
A soft, brown, combustible sedimentary rock, often called brown coal, used as fuel.
"Lignite is a low-grade coal."
Thesaurus
Synonyms: brown coal, wood coal
lig-nite
A soft, brown, combustible sedimentary rock, often called brown coal, used as fuel.
"Lignite is a low-grade coal."
Synonyms: brown coal, wood coal