an elastic substance occurring naturally, as natural rubber, or produced synthetically, as butyl rubber or neoprene.
Origin of elastomer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any material, such as natural or synthetic rubber, that is able to resume its original shape when a deforming force is removed
Word Origin for elastomer
C20: from elastic + -mer
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