noun Etymology: New Latin petrographia, from petr- + Latin -graphia -graphy Date: 1651 the description and systematic classification of rocks, petrographer noun petrographic or petrographical adjective petrographically adverb
PETROGRAPHY
Meaning of PETROGRAPHY in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012