See Also: petrogenesis(dictionary)
petrogenesis (iou)
petrogenesis noun. E20.
[from PETRO-1 + -GENESIS.]
The formation of rocks, esp. igneous and metamorphic rocks; the branch of science that deals with this.
petroge'netic adjective E20.
petroge'netically adverb as regards petrogenesis L20.
petrogenic adjective E20.
petrogeny noun petrogenesis L19.
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