amyl acetaten. An ester of acetic acid, C7H14O2, occurring in isomeric mixtures and used as a flavoring agent, as a paint and lacquer solvent, and in the preparation of penicillin. Also called banana oil.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.amyl acetate n (Elements & Compounds) another name (no longer in technical usage) for pentyl acetate Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014banan?a oil` n. a sweet-smelling liquid ester, C7H14O2, having a bananalike odor; amyl acetate: used as a paint solvent and in artificial fruit flavors. [1925?30] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.