non·ane (n?n??n?, n??n?n?)n. Any of various liquid isomers, C9H20, of the alkane series.[non(a)- + -ane.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.nonane (?n??ne?n) n (Chemistry) chem an alkane hydrocarbon CH3(CH2)7CH3 found in petroleumCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014