Definition of striations:
(n) :
(countable, geomorphology) One of a number of parallel scratch lines in rock outcrops, formed when glaciers dragged rocks across the landscape.
(n) :
(countable, mineralogy) One of a number of parallel grooves and ridges in a rock or rocky deposit, formed by repeated twinning or cleaving of crystals.
(n) :
(roofing) a parallel series of small grooves, channels, or impressions typically within a metal roof panel used to help reduce the potential for oil-canning.
(n) :
The action of marking with a stria.
(n) :
The result of being marked with a stria.