Pronunciation: (talk),[key] —n., v.,talcked or talcedPronunciation: (talkt),[key]talck•ing or talc•ingPronunciation: (tal'king).[key]
—n. 1. Also,tal•cumPronunciation: (tal'kum).[key]a green-to-gray, soft mineral, hydrous magnesium silicate, Mg3(Si4O10)(OH)2, unctuous to the touch, and occurring usually in foliated or compact masses, used in making lubricants, talcum powder, electrical insulation, etc.
2. See talcum powder.