striation striation /straɪˈeɪʃən/

noun

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  ( stria , striation )
   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
     The rock displayed beautiful striations, formed by years of erosion.
   The rock displayed beautiful striations, formed by years of erosion.
   
   
2. A stripe or stripes of contrasting color  ( banding , stria , striation , band )
   a stripe or stripes of contrasting color
    Chromosomes exhibit characteristic bands
   chromosomes exhibit characteristic bands
    The black and yellow banding of bees and wasps
   the black and yellow banding of bees and wasps