Quantum redactiones paginae "Petroleum" differant

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== Etymologia ==
Vocabulum petroleum, id est "oleum [[petra]]e", sc. discernendi causa ab oleo arboreo, primum in libris Anglicis [[saeculum X10|saeculi Xdecimi]] forma ''petraoleum'' reperitur, quod vocabulum Latinum antiquitatis aequae indicare videtur.<ref>[http://www.oed.com/view/Entry/141931 Oxford English Dictionary], s.v. "petroleum".</ref>
 
Oleum petrae Graeci antiqui sub nomine ''naphtha'' (graece {{polytonic|''νάφθα''}}) vel ''naphthas'' ({{polytonic|''νάφθας''}}) vel ''[[Medea|Medeae]] oleum'' ({{polytonic|''Μηδείας ἔλαιον''}}) noverant.<ref>W. Pape, Griechisch-deutsches Handwörterbuch</ref>