Petrography

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Petrography \Pe*trog"ra*phy\, n. [Petro + -graphy.]
     1. The art of writing on stone.
        [1913 Webster]
  
     2. The scientific description of rocks; that department of
        science which investigates the constitution of rocks;


        petrology.
        [1913 Webster]