Oxygen (Noun)
Meaning
A nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust.
Classification
Nouns denoting substances.
Examples
- The human body needs oxygen to function properly, and deprivation of it can lead to serious health problems.
- The scuba diver's tank was filled with compressed oxygen to allow her to breathe underwater for an extended period.
- The atmosphere is composed of 21% oxygen, which is essential for the survival of most living organisms.
- The doctor ordered oxygen therapy for the patient to help increase the oxygen levels in her blood.
- The astronauts had to bring their own oxygen supply with them to the moon because the lunar atmosphere does not contain enough oxygen to support human life.