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chromium dioxide

American

noun

a strongly magnetic, black, semiconducting substance, CrO 2 , used as the active material in a type of recording tape.

chromium dioxide British

noun

Also called (not in technical usage): chrome dioxide. a chemical compound used as a magnetic coating on cassette tapes; chromium(IV) oxide. Formula: CrO 2

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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Du Pont says that the chromium dioxide tape not only holds twice as much information per inch as ordinary tape but reproduces high-frequency signals with greater fidelity.

From Time Magazine Archive

Called Crolyn, the patented tape uses chromium dioxide as its magnetic medium in place of conventional iron oxide.

From Time Magazine Archive

Various other oxides of chromium, intermediate in composition between the sesquioxide and trioxide, have been described, namely chromium dioxide, Cr2O3�CrO3, and the oxide CrO3�2Cr2O3.

From Project Gutenberg

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