Talcum



noun
1.
Also, talcum
[tal-kuh m] /ˈtæl kəm/ (Show IPA). a green-to-gray, soft mineral, hydrous magnesium silicate, Mg 3 (Si 4 O 10)(OH) 2 , unctuous to the touch, and occurring usually in foliated or compact masses, used in making lubricants, talcum powder, electrical insulation, etc.
2.
talcum powder.
verb (used with object), talcked or talced
[talkt] /tælkt/ (Show IPA), talcking or talcing
[tal-king] /ˈtæl kɪŋ/ (Show IPA)
3.
to treat or rub with talc.
noun
1.
See talcum powder
2.
a white, grey, brown, or pale green mineral, found in metamorphic rocks. It is used in the manufacture of talcum powder and electrical insulators. Composition: hydrated magnesium silicate. Formula: Mg3Si4O10(OH)2. Crystal structure: monoclinic
verb talcs, talcking, talcked, talcs, talcing, talced
3.
(transitive) to apply talc to

talcum tal·cum (tāl’kəm)
n.
See talc.

talc (tālk)
n.
A fine-grained white, greenish, or gray mineral, having a soft soapy feel and used in talcum and face powder. Also called talcum.
talc
(tālk)
A very soft white, greenish, or gray monoclinic mineral usually occurring as massive micalike flakes in igneous or metamorphic rocks. It has a soapy texture and is used in face powder and talcum powder, for coating paper, and as a filler in paints and plastics. Chemical formula: Mg3Si4O10(OH)2.

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