First Known Use: 1651
Dictionary
petrography
noun pe·trog·ra·phy \pə-ˈträ-grə-fē, pe-\
Definition of PETROGRAPHY
: the description and systematic classification of rocks
— pe·trog·ra·pher \-fər\ noun
— pet·ro·graph·ic \ˌpe-trə-ˈgra-fik\ or pet·ro·graph·i·cal \-fi-kəl\ adjective
— pet·ro·graph·i·cal·ly \-fi-k(ə-)lē\ adverb
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Origin of PETROGRAPHY
New Latin petrographia, from petr- + Latin -graphia -graphy
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