[n. of action f. STRIATE v.: see -ATION.]

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  1.  Striated condition or appearance.

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1851.  Ruskin, Stones Venice (1874), I. viii. 94. Longitudinal furrowing or striation on the original single shaft.

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1866.  Huxley, Physiol., xii. (1872), 291. This contractile substance, when uninjured, presents a very strongly-marked transverse striation.

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1877.  M. Foster, Physiol., I. ii. (1878), 81. Striation is characteristic of muscles whose contraction is rapid.

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1883.  Chamberlin, in 3rd Ann. Rep. U.S. Geol. Surv., 318. Glacial movements…. Striation.

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1914.  Conan Doyle, Capt. Pole Star, 40. This weapon is said to exhibit a longitudinal striation on the steel.

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  2.  One of a set or system of striæ, a streak, a marking; esp. Geol. one of the grooves or glacial marks found on rock-surfaces; Min. pl. the fine parallel lines on a crystalline face.

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1849.  Dana, Geol., App. I. (1850), 710. A fragment from Harper’s Hill contains 25 to 27 striations in half an inch.

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1888.  P. L. Sclater, Argentine Ornith., I. 97. Agelæus thilius.… Beneath paler, cineraceous white with black striations.

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