petrogenic

== English == === Etymology 1 === From petro- + -genic. ==== Adjective ==== petrogenic (not comparable) Of or pertaining to the formation of rock. === Etymology 2 === From petro- + -genic. ==== Adjective ==== petrogenic (not comparable) (of hydrocarbons etc) Produced by the incomplete combustion of petroleum === Anagrams === progenetic