What does what is air mean

Perhaps it is the change of air , or getting home again. With a resigned air and a somewhat weary smile, Holmes begged the beautiful intruder to take a seat, and to inform us what it was that was troubling her.

Double-click any word on the page to look it up in the dictionary. Air Pump. Context examples The golden year was dying as it had lived, a beautiful and unrepentant voluptuary, and reminiscent rapture and content freighted heavily the air. Martin Eden, by Jack London She often took me out of my box, at my own desire, to give me air , and show me the country, but always held me fast by a leading-string. High in the mountains the air is thin and it can be hard to breathe.

He pumped air into the bicycle tire. There has been heavy fighting on the ground and in the air. Full Definition of air Entry 1 of 2. Rowling … jobs can't just be created out of thin air. Definition of air Entry 2 of 2. Choose the Right Synonym for air Noun pose , air , airs , affectation , mannerism mean an adopted way of speaking or behaving. Examples of air in a Sentence Noun These laws are meant to produce cleaner air.

I like to dine outdoors in the open air. He can't breathe! The city is wonderful seen from the air. Verb The blankets were left outside to air. She opened the windows to air the room.

The company had a meeting so that employees could air their complaints. It is invisible, inodorous, insipid, transparent, compressible, elastic, and ponderable. The mixture of gases present in the earth's atmosphere consisting of oxygen, nitrogen, carbon dioxide, and small amounts of other gases. In artillery and naval gunfire support, a spotting, or an observation, by a spotter or an observer to indicate that a burst or group of bursts occurred before impact. The elastic, compressible, and dilatable fluid encompassing the terraqueous globe.

It penetrates and pervades other bodies, and thus animates and excites all nature. The air symbol -- In this Symbols. Song lyrics by air -- Explore a large variety of song lyrics performed by air on the Lyrics. What does AIR stand for? The concept of using the UAE region as We're not in the era now where you send, you know, big armies to fight or, you know, air forces. We're in a place where you use a jet plane as a missile to knock down buildings; where dirty bombs can be used to extinguish large numbers of people, there are lots of different techniques that you use -- cyber-attacks, attacking our electrical grid.

We are the Air Force. What do we want to do with this technology? We want to weaponize it, the follow-on program to this is the High Speed Strike Weapon effort. I still jump awake at night thinking an air strike is about to hit or that they are coming to take one of us, everyday is a struggle. Dwight D. Eisenhower :. On that day let us solemnly remember the sacrifices of all those who fought so valiantly, on the seas, in the air , and on foreign shores, to preserve our heritage of freedom, and let us reconsecrate ourselves to the task of promoting an enduring peace so that all their efforts shall not have been in vain.

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Forgot your password? A few organisms, however, thrive on these gases. At the bottom of the ocean are bacteria that do not need oxygen or sunlight to survive. In other words, they do not need air.

These strange organisms create their own nutrients using hydrogen sulfide , not carbon dioxide. The air is different as you move higher and higher into the atmosphere. The air gets "thinner" as elevation climbs because there are fewer air molecules up there. Mountain climbers often have to use canisters of oxygen as they climb above 3, meters 12, feet because there is not enough oxygen in the atmosphere for most people to breathe. High mountains such as Mount Everest 8, meters, or 29, feet , in Nepal and China, are littered with empty oxygen canisters that climbers discard when they are used up.

Ozone is made up of three atoms of oxygen. The massive collection of these molecules is called the ozone layer. Unfortunately, air pollution has a negative effect on the air we breathe. Air pollution happens when harmful byproducts, like exhaust from cars, enter the air.

These pollutants can clog the atmosphere with smog , a combination of smoke and fog. They can also create toxic clouds of dust.

Other air pollutants, such as methane and excess amounts of carbon dioxide, can upset the balance of molecules in the air, contributing to global warming. Non-Atmospheric Air Compressed air is air kept at a consistent pressure, such as air pressure at sea level. Airplanes are usually pressurized at ground level so passengers can breathe without canisters of air. Often, compressed air is kept at a pressure higher than normal air pressure. Scuba divers use compressed air to breathe under water.

The canisters of air allow divers to inhale through a tube and exhale into the water. Pneumatics is the science and work of pressurized air and other gases.

The uses for pneumatics are far-ranging. Air brakes in automobiles, trucks, and trains use compressed air to slow wheel rotation and stop the vehicles.

Pipe organs use compressed air at different pressures to create different musical notes. Photograph by Abhishek Singh , My Shot. Substances with a density lower than the surrounding material will float on top of it. Helium has a much lower density than Standard Dry Air.

Objects filled with helium, from small balloons to giant airships, float when filled with this lighter than air substance.