1. any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue. 2. a stripe or stripes of contrasting color. Familiarity information: STRIATION used as a noun is rare.

What does the word striations mean in science?

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. Cell Biology.

Why is muscle striated?

Under the light microscope, muscle cells appear striated with many nuclei squeezed along the membranes. The striation is due to the regular alternation of the contractile proteins actin and myosin, along with the structural proteins that couple the contractile proteins to connective tissues.