noun Download 🔗Share The chemical element (symbol O) with an atomic number of 8 and relative atomic mass of 15.9994. It is a colorless and odorless gas. Examples : "We need oxygen to breathe. " element substance chemistry science Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share Molecular oxygen (O2), a colorless, odorless gas at room temperature, also called dioxygen. Examples : "We need oxygen to breathe. " element substance chemistry material science Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share A mixture of oxygen and other gases, administered to a patient to help them breathe. Examples : "The nurse administered oxygen to the student who fainted in the school hall. " medicine physiology aid substance Chat with AIVocabulary GamePractice Reading
noun Download 🔗Share An atom of this element. Examples : "The scientist studied the oxygen atom in the lab. " element chemistry substance science Chat with AIVocabulary GamePractice Reading