talcum

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talc

 [talk]
a native hydrous magnesium silicate, sometimes with a small amount of aluminum silicate; used as a dusting powder. The inhalation of talc is associated with a wide variety of respiratory disorders.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

talc

(talk),
Native hydrous magnesium silicate, sometimes containing small proportions of aluminum silicate, purified by boiling powdered talc with hydrochloric acid in water; used in pharmacy as a filter aid, as a dusting powder, and in cosmetic preparations.
[Ar. talq]
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
Talcum powder is made from talc, a mineral made up mainly of the elements magnesium, silicon, and oxygen.
Their review did not consider a common occult form of asbestos exposure arising from the use of talcum powders. In 1976, Rohl et al (2) analyzed consumer talcums and reported that 10 of the 20 products (50%) analyzed contained tremolite and anthophyllite.
The link between talcum powder and ovarian cancer was suggested after researchers noticed that a majority of the ovarian tumors they studied contained talc particles.
The purposes of this paper are (1) to describe a new method of enhancing the visibility of fine features of the tiny webs, using Oecobius concinnus Simon, 1893 (Oecobiidae) as an example; and (2) to compare it with the talcum powder coating method (Eberhard et al.
Findings from studies in women that examined the possible link between talcum powder and ovarian cancer were mixed, with some studies showing a slightly increased risk.
There are several different types of talcum powder. When it first came about, the powder generally contained talc -- a mineral made of magnesium, silicon and oxygen -- in its natural form.
"Interestingly, we have also had substances deposited that people had obviously bought believing them to be drugs that were actually things like talcum powder or cement dust and not drugs at all.
Chief Inspector Armstrong said: "Interestingly but alarmingly we also had substances deposited that people had bought believing them to be drugs that were actually things like talcum powder or cement dust.
According to the decree, the value of the export duties on ultra-fine talcum powder (50 microns and less) is EGP 300 per tonne.
Pouring talcum powder between the joints in the floorboard can solve the problem by lubricating the surfaces.
We don't know what the white powder was, whether talcum powder or something more sinister."