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GR-S

noun \ ¦jēˌär¦es \
variants: or less commonly GR-S rubber

Definition of GR-S

: any of a class of general-purpose synthetic rubbers that are made by copolymerizing emulsions of butadiene and styrene commonly at a temperature of either 122° F or 41° F and that are used especially in tires — see cold rubber

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Origin and Etymology of gr-s

g overnment r ubber + s tyrene

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