chromium

New Latin, from French chrome (from Ancient Greek χρῶμα (khrôma, “color”)) + -ium. So called because of the striking colors of its compounds.

• (US) enPR: krō'mē-əm; IPA^(key): /ˈkɹoʊ.mi.əm/

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chromium (countable and uncountable, plural chromiums)

1. A chemical element (symbol Cr) with an atomic number of 24: a steely-grey, lustrous, hard and brittle transition metal.

• chrome (when used for plating)

• green rouge

• David Barthelmy (1997–2024) “Chromium”, in Webmineral Mineralogy Database.
• “chromium”, in Mindat.org‎, Hudson Institute of Mineralogy, 2000–2024.
• “chromium”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.
• “chromium”, in The Century Dictionary […], New York, N.Y.: The Century Co., 1911, →OCLC.
• “chromium”, in OneLook Dictionary Search.

• (Classical) IPA^(key): /ˈkʰroː.mi.um/, [ˈkʰroːmiʊ̃ˑ]
• (modern Italianate Ecclesiastical) IPA^(key): /ˈkro.mi.um/, [ˈkrɔːmium]

chrōmium n (genitive chrōmiī); second declension

1. chromium

Second-declension noun (neuter).