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is any of various forms of ground stone. In modern contexts the word refers to a finely ground, nearly pure form of
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Dictionary.com
Unabridged (v 1.1), Origin: 1585–95; < L silex, s. silic- hard stone, flint, boulder]
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originally referred to any hard rock, although now it often refers specifically to flint.
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It was later used in 1787 when describing experiments in a published paper by
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or a similar word is used to refer to flint. Although the modern
English word
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where such earths are mentioned as the source of his isolation of the element
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has the same etymology, its current meaning has changed. These are
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In the late 16th century, it meant powdered or ground up "
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is now most commonly used to describe finely ground
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124:whose name literally means 'flint'.
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