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chromium
[ kroh-mee-uhm ]
noun
- a lustrous, hard, brittle, metallic element used in alloy steels for hardness and corrosion resistance, as in stainless steel, and for plating other metals: chromium salts are used as pigments and mordants. : Cr; : 51.996; : 24; : 7.1.
chromium
/ ˈkrəʊmɪəm /
noun
- a hard grey metallic element that takes a high polish, occurring principally in chromite: used in steel alloys and electroplating to increase hardness and corrosion-resistance. Symbol: Cr; atomic no: 24; atomic wt: 51.9961; valency: 2, 3, or 6; relative density: 7.18–7.20; melting pt: 1863±20°C; boiling pt: 2672°C
chromium
/ krō′mē-əm /
- A hard, shiny, steel-gray metallic element that is rust-resistant and does not tarnish easily. It is used to plate other metals, to harden steel, and to make stainless steel and other alloys. Atomic number 24; atomic weight 51.996; melting point 1,890°C; boiling point 2,482°C; specific gravity 7.18; valence 2, 3, 6.
- See Periodic Table
Word History and Origins
Origin of chromium1
Example Sentences
In 2021, for example, the state legislature adopted rules allowing for wood coated with toxic metals like chromium and arsenic to be taken to nonhazardous waste facilities.
He oversaw several major initiatives, including the Biden administration's ban on Red No. 3 dye and the FDA’s investigation of applesauce contaminated with elevated levels of lead and chromium.
One in particular — Phos-Chek LC-95W — had “potentially alarming” concentrations of several metals, including chromium, cadmium and vanadium, he said, adding that the substance could be classified as hazardous waste under federal and California regulations.
The latest announcement comes after the FDA issued a public health alert back in March on six brands of cinnamon products that had elevated levels of lead and chromium.
“Activated carbon works for chromium 6 but not for arsenic. Distillation, again, gets rid of everything but it’s not practical.”
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