striations

/S T R IY0 EY1 SH AH0 N Z/
noun
  1. 1

    (countable, geomorphology) One of a number of parallel scratch lines in rock outcrops, formed when glaciers dragged rocks across the landscape.

  2. 2

    (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.

  3. 3

    (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.

  4. 4

    The action of marking with a stria.

  5. 5

    The result of being marked with a stria.