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    Tin — definition & meaning




    WordTypeDefinition
    Tin n. An elementary substance found as an oxide in the mineral
    cassiterite, and reduced as a soft white crystalline metal, malleable
    at ordinary temperatures, but brittle when heated. It is not easily
    oxidized in the air, and is used chiefly to coat iron to protect it
    from rusting, in the form of tin foil with mercury to form the
    reflective surface of mirrors, and in solder, bronze, speculum metal,
    and other alloys. Its compounds are designated as stannous, or stannic.
    Symbol Sn (Stannum). Atomic weight 117.4.



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