Subbituminous is valid Scrabble Word

Is subbituminous a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is subbituminous valid Words with Friends?
Words with Friends YES

13 letters word
19 points in Scrabble
26 points in WWF

Definitions for SUBBITUMINOUS in dictionary:

ADJECTIVE:

of, relating to, or being coal of lower rank than bituminous coal but higher than lignite
(of coal) dark brown to black and intermediate in rank between lignite and bituminous.

Similar words containing BITUMINOU without suffix s and without prefix sub

bituminous14

Find what other words can be done using letters: "subbituminous"
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