The Collaborative International Dictionary
Lithologic
Lithologic \Lith`o*log"ic\, Lithological \Lith`o*log"ic*al\, a.
(Geol.) Of or pertaining to the character of a rock, as derived from the nature and mode of aggregation of its mineral contents.
Of or pertaining to lithology.
Wiktionary
lithologic
a. pertaining to lithology