| Definitions | noun
- finely ground relatively pure form of silicas used as a paint filler etc.
- Obsolescent: In Latin, ca 1590, use meaning "Flints" (hard rocks), as a Early Modern Era term for silica materials (earths).
Etymology: Origin: 1585"95; in latin, Latin word: silex, for hard stone (flints). Subsequently, silicon, Silicon was first identified by the chemist w:Antoine Lavoisier, Antoine Lavoisier in w:1787, 1787 as a component element of the silex<!-- refs (see the several http://dictionary.reference.com/browse/silex): esp. Dictionary.com Unabridged (v 1.1) - Cite This SourcesiÂlex "nounflint; silica.Origin: 1585"95; < L silex, s. silic- hard stone, flint, boulder -->, or silicis for flint, and more generally what were termed "flint's" during the era, nowadays as we would say "silica" or more formally, "silicates", and silex came to mean ground up silica's.
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