noun🔗ShareThe chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas."We need oxygen to breathe. "elementsubstancechemistryscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareMolecular oxygen (O2), a colorless, odorless gas at room temperature, also called dioxygen."We need oxygen to breathe. "elementsubstancechemistrymaterialscienceChat with AIVocabulary GamePractice Reading
noun🔗ShareA mixture of oxygen and other gases, administered to a patient to help them breathe."The nurse administered oxygen to the student who fainted in the school hall. "medicinephysiologyaidsubstanceChat with AIVocabulary GamePractice Reading
noun🔗ShareAn atom of this element."The scientist studied the oxygen atom in the lab. "elementchemistrysubstancescienceChat with AIVocabulary GamePractice Reading
