American Heritage® Dictionary of the English Language, Fourth Edition
- n. A lustrous, hard, steel-gray metallic element, resistant to tarnish and corrosion and found primarily in chromite. It is used in the hardening of steel alloys and the production of stainless steels, in corrosion-resistant decorative platings, and as a pigment in glass. 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 Table at element.
Century Dictionary and Cyclopedia
- n. Chemical symbol, Cr; atomic weight, 52.3; specific gravity, 6.8-7.3. An element belonging to the metals, obtained in the pure state as a light-green crystalline powder. The separate crystals under the microscope have a tin-white color. It is less fusible than platinum, and after fusion is harder than corundum. It oxidizes slowly in the air, but burns vividly in oxygen. Hot hydrochloric or sulphuric acid dissolves it; nitric acid does not affect it. Chromium does not occur native. It is found in the mineral crocoite or crocoisite (lead chromate), and as a sulphid in daubreelite; it occurs also in some meteoric iron, and the fine green color which makes the emerald valuable is believed to be due to chromium; but the most abundant ore of chromium is chromite or chrome-ironstone. Among its most important compounds are the oxid or sesquioxid (Cr2O3), which occurs native in chrome-ocher and chromite. It is a dull-green powder when made artificially by reduction of the chromates, and is used extensively for imparting a green color to porcelain and enamel, and somewhat as a pigment, in the form of chromic oxid, under the name of Guignet's green. Potassium bichromate (k2Cr2O7) is the salt from which most salts of chromium are prepared. It forms garnet-red crystals, which dissolve in water, making a red solution. It is largely used in dyeing and calico-printing and as an oxidizing agent; also in the carbon or other processes of photographic printing, and in a form of voltaic cell called the bichromate cell. See
cell, 8. It is an active poison.
- n. A metallic chemical element (symbol Cr) with an atomic number of 24.
GNU Webster's 1913
- n. (Chem.) A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also
- n. a hard brittle multivalent metallic element; resistant to corrosion and tarnishing
- From New Latin, from French chrome, from Ancient Greek χρῶμα (khrōma, "color") + -ium (Wiktionary)
- From French chrome; see chrome. (American Heritage® Dictionary of the English Language, Fourth Edition)
“Results from the recent samples indicate most of the chromium is of the benign variety, health department spokesman Guillermo Cole said Friday.”
“Once again, chromium is also essential to life ....”
“The name chromium was derived from the Greek word chroma which means color, in reference to the fact that chromium is known to cause a number of colors in a variety of materials.”
“Broccoli is packed with vitamin C, beta-carotene, indole, glutathione and lutein, and is also a rich source of the trace metal chromium, which is a life extender and protects against the ravages of out-of-control insulin and blood sugar.”
“This is an improvement over hexavalent chromium, which is classified as a known human carcinogen.”
“The legal case involved the contamination of drinking water in Hinkley, California, by the carcinogen known as chromium (VI).”
“This material was identified as chromium oxide (CrO3) by Louis-Nicholas Vauquelin.”
“According to the article, these surveys found high levels of hexavalent chromium, which is used to plate metal and rust-proof aircraft engine parts, in the soil.”
“Chromite is an essential raw material for the production of chromium, which is used in the production of stainless steel.”
“A federal magistrate in Portland has allowed a group of 21 soldiers, who believe they were exposed to hexavalent chromium, which is known to cause cancer, to continue their suit against a military contractor in Iraq.”
These user-created lists contain the word ‘chromium’.
All the scientific words found in the official EU nomenclature. For the screening I used Vocabgrabber of the Visual Thesaurus.
includes words of the "Prodcom list"
A list of chemical elements
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try not to enjoy it too much.
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It's a hazardous world out there...poison all around. I've tried not to include too many drugs (including medicines) and have ignored the fact that too much of anything can poison you. We're going ...
A selection of frequent or favourite words from Sylvia Plath's Collected Poems, as part of my bid to read them all. Quotes can be found on each citation page.
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