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striation

stri·a·tion [ strī áysh'n ] (plural stri·a·tions)


noun 
Definition:
 
1. stripy pattern: a patterning or marking with parallel grooves or narrow bands

2. anatomy banding or band within muscle fiber: the striped pattern of striated muscle, or any of the light and dark bands that make up this effect

3. geology narrow mark: a narrow groove or scratch on an exposed rock face, caused by abrasion by hard rock fragments embedded in a moving glacier

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