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petroleum A comparatively volatile liquid bitumen composed principally of hydrocarbon, with traces of sulphur, nitrogen or oxygen compounds; can be removed from the earth in a liquid state [pə'trəʊliəm, pə'troʊl-] n
environ.	peitriliam
English thesaurus
petroleum [pə'trəʊliəm, pə'troʊl-] abbr.
abbr., mil.	petro; pipeline outfit; petr
mil., abbr.	pet

Petroleum: 22 phrases in 7 subjects

Energy industry	3
Environment	4
Finances	3
General	1
Oil / petroleum	5
Politics	2
Transport	4