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- 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 | Dictionary. com
The terms air or the air is used generally to refer to the sky or open space outside Real-life example: Airplanes and helicopters are designed to fly in the air, meaning the empty space over the ground
- 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 Meaning | Britannica Dictionary
AIR meaning: 1 : the invisible mixture of gases (such as nitrogen and oxygen) that surrounds the Earth and that people and animals breathe; 2 : the space or sky that is filled with air
- Air - definition of air by The Free Dictionary
air - a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
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- air noun - Definition, pictures, pronunciation and usage notes | Oxford . . .
Definition of air noun in Oxford Advanced Learner's Dictionary Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more
- AIR | English meaning - Cambridge Dictionary
AIR definition: 1 the mixture of gases that surrounds the earth and that we breathe: 2 the space above the… Learn more
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