Definition that contains natural rubber
- rubber any of various synthetic elastic materials whose properties resemble natural rubber
- ebonite a hard nonresilient rubber formed by vulcanizing natural rubber
- para rubber a type of natural rubber obtained from tropical South American trees
- vulcanite a hard nonresilient rubber formed by vulcanizing natural rubber
- synthetic rubber any of various synthetic elastic materials whose properties resemble natural rubber
- crepe rubber crude natural rubber; used mainly for shoe soles
- hard rubber a hard nonresilient rubber formed by vulcanizing natural rubber