striation

From striate +‎ -ion.

• Audio (Southern England):

  (file)

striation (countable and uncountable, plural striations)

1. (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.
2. (countable, geomorphology) One of a number of parallel scratch lines in rock outcrops, formed when glaciers dragged rocks across the landscape.
   • 2012 December 26, John Branch, “Snow Fall: The Avalanche at Tunnel Creek”, in The New York Times‎^[1], New York, N.Y.: The New York Times Company, →ISSN, →OCLC, archived from the original on 14 November 2013:

     The energy raised the temperature of the snow a couple of degrees, and the friction carved striations high in the icy sides of the canyon walls.

3. The action of marking with a stria.
4. The result of being marked with a stria.
5. (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.

• William Dwight Whitney, Benjamin E[li] Smith, editors (1911), “striation”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.
• “striation”, in OneLook Dictionary Search.

• tritonias

• Audio (France (Lyon)):

  (file)

striation f (plural striations)

1. striation

• “striation”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.