vulcanization

noun 0.710

ebonite

noun 0.611

vesuvianite

noun 0.588

rubber

noun 0.570

vitrinite

noun 0.557

silicone rubber

noun 0.549

india rubber

noun 0.541

elastomer

noun 0.537

butyl rubber

noun 0.532

polyisoprene

noun 0.526

novaculite

noun 0.524

volcanic glass

noun 0.521

volcanic

noun 0.520

acetylene black

noun 0.520

elastomeric

noun 0.515

rubber cement

noun 0.514

phonolite

noun 0.511

resinoid

noun 0.509

carbon black

noun 0.505

kimberlite

noun 0.505

vinyl

noun 0.503

rubbers

noun 0.503

polybutadiene

noun 0.501

perlite

noun 0.501

vivianite

noun 0.501

rock varnish

noun 0.500