striation

Meaning

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

Etymology

From striate + -ion.

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