subbituminous

adjective
sub·​bi·​tu·​mi·​nous | \ ˌsəb-bə-ˈtü-mə-nəs How to pronounce subbituminous (audio) , -bī-, -ˈtyü-\

Definition of subbituminous

: of, relating to, or being coal of lower rank than bituminous coal but higher than lignite

First Known Use of subbituminous

1835, in the meaning defined above

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Dictionary Entries near subbituminous

subbasin

sub-bass

subbifid

subbituminous

subblock

subboreal

Subbotnik

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The first known use of subbituminous was in 1835

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