petrography
noun
pe·trog·ra·phy pə-ˈträ-grə-fē 
pe-
: the description and systematic classification of rocks
petrographer
pə-ˈträ-grə-fər
noun pe-
petrographic
ˌpe-trə-ˈgra-fik
adjective or petrographical
ˌpe-trə-ˈgra-fi-kəl
petrographically
ˌpe-trə-ˈgra-fi-k(ə-)lē
adverb 
Word History
Etymology
petro- + -graphy
First Known Use
1651, in the meaning defined above
- sesquialtera
- sesquialteral
- sesquialteras
- sesquialters
- sesquicarbonate
- sesquicarbonates
- sesquicentenaries
- sesquicentenary
- sesquicentennial
- sesquicentennials
- sesquidiploid
- sesquih
- sesquipedal
- sesquipedalia
- sesquipedaliae
- sesquipedalian
- sesquipedalianism
- sesquipedalianisms
- sesquipedalians
- sesquipedalias
- sesquipedalism
- sesquipedalities
- sesquipedality
- sesquipedalityes
- sesquipedalitys