- Air | Composition, Oxygen, Nitrogen | Britannica
air, mixture of gases comprising the Earth’s atmosphere The mixture contains a group of gases of nearly constant concentrations and a group with concentrations that are variable in both space and time
- AIR Definition Meaning - Merriam-Webster
The meaning of AIR is the mixture of invisible odorless tasteless gases (such as nitrogen and oxygen) that surrounds the earth; also : the equivalent mix of gases on another celestial object (such as a planet)
- AIR | definition in the Cambridge English Dictionary
AIR meaning: 1 the mixture of gases that surrounds the earth and that we breathe: 2 the space above the… Learn more
- Air - definition of air by The Free Dictionary
1 Of or relating to the air or the movement of air: an air tube 2 Existing or living in the air; aerial 3 Powered by compressed air: an air horn 4 Containing or inflated by air
- What does air mean? - Definitions for air
a particular state of the atmosphere, as respects heat, cold, moisture, etc , or as affecting the sensations; as, a smoky air, a damp air, the morning air, etc Air noun
- Air - National Geographic Society
Air is the invisible mixture of gases that surrounds Earth Air contains important substances, such as oxygen and nitrogen, that most species need to survive
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