elas·to·mer \ə̇ˈlastəmə(r), ēˈ-\noun (-s) Etymology:elast- + -mer : an elastic rubberlike substance (as a synthetic rubber or a plastic having some of the physical properties of natural rubber) < polyvinyl elastomers > • elas·to·mer·ic\ ̷ ̷| ̷ ̷ ̷ ̷|merik\adjective