紅こう色しょく硫黄いおう細さい菌きんMeaningsNoun1. purple sulfur bacteria; purple sulphur bacteriaKanji used紅deep red色color硫sulphur黄yellow細thin菌microbeComposed of紅こう色しょくred; crimson; vermilionNoun硫黄いおうsulfur (S); sulphurNoun細さい菌きんbacterium; bacteria; germNoun