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[ih-las-tuh-mer] /ɪˈlæs tə mər/
noun, Chemistry
an elastic substance occurring naturally, as natural rubber, or produced synthetically, as butyl rubber or neoprene.
1935-40; elast(ic) + -o- + Greek méros a part
Related forms
[ih-las-tuh-mer-ik] /ɪˌlæs təˈmɛr ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for elastomer
  • The tape is made of a biodegradable elastomer that can be laced with drugs.
  • There are three main parts to each: the inner steel member, the outer steel member, and the elastomer.
  • elastomer impregnated slings shall be proof tested before coating.
British Dictionary definitions for elastomer


any material, such as natural or synthetic rubber, that is able to resume its original shape when a deforming force is removed
Derived Forms
elastomeric (ɪˌlæstəˈmɛrɪk) adjective
Word Origin
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
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Encyclopedia Article for elastomer

any rubbery material composed of long, chainlike molecules that are capable of recovering their original shape after being stretched to great extents. Under normal conditions the long molecules making up an elastomeric material are irregularly coiled. With the application of force, however, the molecules straighten out in the direction in which they are being pulled. Upon release, the molecules spontaneously return to their normal compact, random arrangement.

Learn more about elastomer with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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