cetane
Concise Oxford English Dictionary © 2008 Oxford University Press:
cetane /ˈsiːteɪn/
▶noun Chemistry a colourless liquid hydrocarbon of the alkane series, present in petroleum spirit. [C16H34.]
– origin C19: from L. cetus ‘whale’ (because rel. compounds were first derived from spermaceti) + -ane2.
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