| Main Entry: | air quality |
| Part of Speech: | n |
| Definition: | a measurement of the pollutants in the air; a description of healthiness and safety of the atmosphere |
| Example: | Smog is a mixture of pollutants, principally ground-level ozone and produced by chemical reactions, that greatly affects air quality. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a chattering or flighty, light-headed person. |
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