noun🔗SharePentoxidAny oxide containing five oxygen atoms in each molecule"The chemist explained that dinitrogen pentoxide is a dangerous compound because it reacts violently with water. "Der Chemiker erklärte, dass Distickstoffpentoxid eine gefährliche Verbindung ist, weil es heftig mit Wasser reagiert.chemistrycompoundsubstanceelementChat with AIVocabulary GamePractice Reading