Meaning & use
striation
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A thin groove, ridge, or line, often one of a parallel series, on a surface.
See it in a sentence
Geologists studied the striations on the rock to trace the glacier's movement.
Under the microscope, the muscle tissue showed clear striations.
A note on using this word
Common in geology (scratches left by glaciers) and biology (the banded pattern of striated muscle).
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