'Geological' definitions:

Definition of 'geological'

From: WordNet
adjective
Of or relating to or based on geology; "geological formations"; "geologic forces" [syn: geological, geologic]

Definition of 'Geological'

From: GCIDE
  • Geologic \Ge`o*log"ic\, Geological \Ge`o*log"ic*al\, a. [Cf. F. g['e]ologique.] Of or pertaining to geology, or the science of the earth. [1913 Webster]