from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A crude oil that is obtained from oil shale by heating and distillation.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun a crude oil, containing
hydrocarbons, obtained by the distillationof oil shale
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun oil extracted from oil shale by heating
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