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 | travel via aircraft |
| a distinctive but intangible quality surrounding a person or thing |
| a succession of notes forming a distinctive sequence |
| medium for radio and television broadcasting |
| the region above the ground |
| the mass of air surrounding the Earth |
| a slight wind (usually refreshing) |
| a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of |
| once thought to be one of four elements composing the universe (Empedocles), associated with the humour blood |