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- Dictionaryair/ɛː/
noun
- 1. the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.
- 2. an impression of a quality or manner given by someone or something: "she answered with a faint air of boredom" Similar
verb
- 1. express (an opinion or grievance) publicly: "a meeting in which long-standing grievances were aired" Similar
- 2. expose (a room) to the open air in order to ventilate it: British "the window sashes were lifted regularly to air the room" Similar
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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 is a mixture of many gases and tiny dust particles. It is the clear gas in which living things live and breathe . It has an indefinite shape and volume .
Oct 1, 2024 · 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. Human beings (Homo sapiens), of course, are one of those species. Sometimes, the word " atmosphere " is used instead of the word "air."
Sep 25, 2024 · So what is air, exactly? It’s a mixture of different gases. The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen. 1 of 11. Games. Activities. People. Videos. Mystery. Learn new things about air.
Jul 29, 2024 · Nearly all of Earth's atmosphere (air) is comprised of a mere five gases: nitrogen, oxygen, water vapor, argon, and carbon dioxide. Several other compounds are also present in our air in trace amounts. Below is a summary of the chemical composition of Earth's atmosphere.
Air is a mixture of gases, most of which are naturally occurring. Air also contains a significant amount of human-made air pollutants, including some that are not safe to breathe and some that are causing the climate to warm. The troposphere also contains water in all three phases (liquid, solid, and gas) as well as solid particles called aerosols.
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). How to use air in a sentence. Synonym Discussion of Air.
The atmosphere of Earth is composed of a layer of gas mixture that surrounds the Earth's planetary surface (both lands and oceans), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes), all retained by Earth's gravity.
Meaning of air in English. air. noun. uk / eə r/ us / er / air noun (GAS) Add to word list. A2 [ U ] the mixture of gases that surrounds the earth and that we breathe: fresh air I went outside to get some fresh air. You should put some air in your tyres - they look flat to me. the air B2 [ S ]
Nov 29, 2019 · Air is the general name for the mixture of gases that makes up the Earth's atmosphere. This gas is primarily nitrogen (78%), mixed with oxygen (21%), water vapor (variable), argon (0.9%), carbon dioxide (0.04%), and trace gases. Pure air has no discernible scent and no color.
