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Definition of: talc
Our photo definition of talc 
(talk) noun
A soft, hydrous magnesium silicate, H2Mg3(SiO3)4, used in making paper, soap, toilet powder, lubricants, etc. Soap-stone and French chalk are varieties of talc.
—v.t. talcked or talced, talck·ing or talc·ing To treat with talc: to talc a photographic plate. [<F <Med. L talcum <Arabian talq <Persian talk]
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