单词	phosphorus heptasulfide
释义	phosphorus heptasulfide noun phosphorus hep·​ta·​sulfide -¦heptə+ : a yellow crystalline compound P4S7 made by heating a mixture of phosphorus and sulfur in a ratio of about 4 to 7 equivalents, regarded formerly as a trisulfide, and used chiefly in the synthesis of organic sulfur compounds (as thiophene); tetra-phosphorus heptasulfide Word History Etymology heptasulfide from hepta- + sulfide
随便看	prisable prisage prisages prisal priscan Priscian priscilla Priscillian Priscillianism Priscillianist prise prised priser prisere priseres prisers prises prishtina prishtinë prisiadka prising prisjadka prism prism binocular prism glass

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