noun
: a crystalline salt K 2 S 2 O 8 used chiefly in oxidizing and bleaching and as a promoter of polymerizations (as in the manufacture of GR-S rubber)
noun
: a crystalline salt K 2 S 2 O 8 used chiefly in oxidizing and bleaching and as a promoter of polymerizations (as in the manufacture of GR-S rubber)
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012