noun
talc
TALK/tˈælk/
A soft mineral used in powders and industrial products.
The talc specimen lies beside a mortar of fine powder.

Etymology
French talc supplies the mineral name. Arab and medieval writers used the name more broadly for transparent or shiny minerals, including mica and selenite, rather than only the mineral now used as an absorbent powder.
In context
talc is a mineral made up mainly of the elements magnesium silicon and oxygen in its powdered form talc absorbs moisture well
More examples
- The powder contained finely ground talc.
- Talc gave the material a smooth feel.
- The laboratory identified talc in the rock.
Forms
talc