Etymology
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lithium (n.)
silver-white metallic element, 1818, with element ending -ium + lithia, Modern Latin name given by Swedish chemist Jöns Jacob Berzelius (1779-1848) to the earth from which it was extracted, from Greek lithos "stone" (see litho-). The name indicates its mineral origin and distinguishes it from two previously known alkalis of vegetable origin.
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lithic (adj.)
1797, "pertaining to or consisting of stone," from Greek lithikos "of or pertaining to stone," from lithos "stone" (see litho-). From 1875 as "pertaining to lithium.
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