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isooctane

[ ahy-soh-ok-teyn ]

noun

, Chemistry.
  1. the octane C 8 H 18 , used as one of the standards in establishing the octane number of a fuel.


isooctane

/ ˌaɪsəʊˈɒkteɪn /

noun

  1. a colourless liquid alkane hydrocarbon produced from petroleum and used in standardizing petrol. Formula: (CH 3 ) 3 CCH 2 CH(CH 3 ) 2 See also octane number
“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


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Word History and Origins

Origin of isooctane1

First recorded in 1905–10; iso- + octane

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Isonzoiso-osmotic