1.  stria(n = noun.shape) 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;
is a kind of channel, groove
Derived form verb striate₁

2.  stria(n = noun.attribute) band, banding, striation - a stripe or stripes of contrasting color; "chromosomes exhibit characteristic bands"; "the black and yellow banding of bees and wasps"
is a kind of bar, streak, stripe
has particulars: collar, stretch mark
Derived form verb striate₁

1.  A minute groove, or channel; a threadlike line, as of color; a narrow structural band or line; a striation; as, the striæ, or groovings, produced on a rock by a glacier passing over it; the striæ on the surface of a shell; a stria of nervous matter in the brain. [1913 Webster]

2.  A fillet between the flutes of columns, pilasters, or the like. Oxf. Gloss. [1913 Webster]

stria, n. (pl. -ae)
1 Anat., Zool., Bot., & Geol. a a linear mark on a surface. b a slight ridge, furrow, or score.
2 Archit. a fillet between the flutes of a column.

Etymology:
L