striation

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noun stri·a·tion \strī-ˈā-shən\

Definition of striation

1a : the fact or state of being striatedb : arrangement of striations or striae
2 : a minute groove, scratch, or channel especially when one of a parallel series
3 : any of the alternate dark and light cross bands of a myofibril of striated muscle

Recent Examples of striation from the Web

Gaze in wonder at the striations of color in Death Valley, feel on your clothes the sopping California fog and on your face the weight of a cloud bank pressing against a lone tree on a South Dakota horizon.

— dominique browning, New York Times, "Photos, Gardens, Birds, Trees: What’s Happening in the Great Outdoors", 29 May 2017
Iris The colored part of the eye has unique furrows, striations, pits, and variations.

— wired staff, WIRED, "Identify Yourself", 1 May 2004

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'striation'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of striation

circa 1847

Medical Dictionary

striation

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noun stri·a·tion \strī-ˈā-shən\

Medical Definition of striation

1: the fact or state of being striated
2: a minute groove, scratch, or channel especially when one of a parallel series
3: any of the alternate dark and light cross bands of a myofibril of striated muscle