chromium (redirected from Chromium trioxide)

chromium /chro·mi·um/ (Cr) (kro´me-um) a chemical element, at. no. 24. It is an essential dietary trace element, but hexavalent chromium is carcinogenic.

---

chromium 51  a radioactive isotope of chromium having a half-life of 27.7 days and decaying by electron capture with emission of gamma rays (0.32 MeV); it is used to label red blood cells for measurement of mass or volume, survival time, and sequestration studies, for the diagnosis of gastrointestinal bleeding, and to label platelets to study their survival.

chromium trioxide  chromic acid.

---

chro·mi·um (krm-m)

n. Symbol Cr

A lustrous hard metallic element, resistant to tarnish and corrosion and found primarily in chromite. It is used to harden steel alloys, in decorative platings, and as a pigment in glass. Atomic number 24.

---

chromium,

n an essential mineral that is associated with glucose tolerance, high cholesterol, blocked arteries, glaucoma, obesity, diabetes, and hypoglycemia. Not for use by chil-dren or pregnant or nursing women. Also called
chromium picolinate, chromium polynicotinate, or
chromium chloride.

---

chromium

a chemical element, atomic number 24, atomic weight 51.996, symbol Cr. See Table 6.

---

chromium-51

a radioisotope of chromium having a half-life of 27.8 days; used to label red blood cells to determine red cell volume and red cell survival time. Symbol ⁵¹Cr. See also cr⁵¹edta.

chromium nutritional deficiency

possibly causally related to the onset of diabetes mellitus in primates.

chromium trioxide

possibly carcinogenic in humans. See also chromate.