oxygens

Noun

oxygen (countable and uncountable, plural oxygens)

1. 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. Sometimes called elemental oxygen to distinguish it from molecular oxygen.
   • Holonyms: dioxygen, O₂, oxygen (loose sense)

   Synonyms:

   sourstuff, E948[packaging gas]]>

2. (loose but very common, even in formal use) Molecular oxygen (O₂), a colorless, odorless gas at room temperature.
   • Meronym: oxygen (strict sense)

   Synonyms:

   dioxygen

3. A mixture of oxygen and other gases, administered to a patient to help them breathe.
4. (countable) An atom of this element.
   • Look first at any structure to see if there is a carbon with two oxygens attached. Hemiacetals, hemiketals, acetals, and ketals are all alike in that regard.2013, Spencer L. Seager, Michael R. Slabaugh, Chemistry for Today: General, Organic, and Biochemistry, page 479
5. (figuratively) A condition or environment in which something can thrive.
   • Silence is the oxygen of shame.