striation: Meaning and Definition of

stri•a•tion

1. striated condition or appearance.
2. a stria; one of many parallel striae.
3. any of a number of scratches or parallel grooves on the surface of a rock, resulting from the action of moving ice, as of a glacier.
4. any of the alternating light and dark crossbands that are visible in certain muscle fibers, esp. of voluntary muscles, and are produced by the distribution of contractile proteins.