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“petrographies”
The scientific description of the composition and formation of rocks: Petrography is the systematic classification of igneous and metamorphic stones on the basis of their mineralogical and textural relationships; especially, by means of microscopic studies.
This entry is located in the following units:
grapho-, graph-, -graph, -graphy, -grapher, -graphia
(page 67)
petro-, petr-, petri-, peter-
(page 4)