Part of speech: adjective

Of, pertaining to, or derived from geology. geological.

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Usage examples "geologic":

  1. This principle of variation was no doubt much more active back in geologic time, during the early history of animal life upon the globe, than it is in this late age. - "Ways of Nature", John Burroughs.
  2. And so it is, if age be counted by lives and passions rather than by geologic courses. - "Naples Past and Present", Arthur H. Norway.
  3. Not only should it be taken at every opportunity during the regular school year, but no summer should be allowed to pass without geologic practice in the field. - "The Economic Aspect of Geology", C. K. Leith.