isooctane

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See also: iso-octane

English

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Etymology

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From iso- +‎ octane.

Noun

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isooctane (countable and uncountable, plural isooctanes)

  1. (organic chemistry) any isomer of n-octane; especially 2,2,4-trimethylpentane, used as a reference in the determination of the octane number of fuel