Elastomer

[1] A term which includes natural rubber and the many synthetic materials that possess rubber-like properties.
[2] An elastic macromolecular material that at room temperature returns rapidly to approximately its initial dimensions and shape after substantial deformation by a weak stress and release of the stress.
[3] A classification of rubber-like substances used in the formulation of adhesives, coatings, and sealers without reference to their composition. Also classed as an elastic material that can be stretched repeatedly to at least twice its original length and, upon sudden release of stress, to return with equal force to its approximate original length thermoplastic elastomers
[4] An elastic polymer, a springy plastic used commonly as a spring or shock absorber, particularly in suspension forks and similar mechanisms.