petrog.

abbreviation for

1. petrography.

petrog.

abbreviation for

1. petrography

Example Sentences

Petrog′eny, the science of the origin of rocks; Pet′roglyph, a rock-carving.

From Project Gutenberg

Petrog′lyphy, the art of writing on rocks or stones; Petrog′rapher, a student of petrography.

From Project Gutenberg