subbituminous
adjEtymology From sub- + bituminous.
1
Partly or imperfectly bituminous.
- subbituminous coal
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
adj
Etymology From sub- + bituminous.
Partly or imperfectly bituminous.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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