|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|
|—vb , talcs, talcking, talcked, talcs, talcing, talced|
|3.||(tr) to apply talc to|
|[C16: from Medieval Latin talcum, from Arabic talq mica, from Persian talk]|
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) Pronunciation Key
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.