- The definition of air is the mixture of oxygen, nitrogen and other gasses that are consistently present around us.
A cool breeze is an example of air.
air definition by Webster's New World
- the elastic, invisible mixture of gases (chiefly nitrogen and oxygen, as well as hydrogen, carbon dioxide, argon, neon, helium, etc.) that surrounds the earth; atmosphere
- space above the earth; sky
- a movement of air; breeze; wind
- cool, refreshing air; fresh air
- compressed air
- an outward appearance; general impression or feeling given by something: an air of luxury fills the room
- a pervading or surrounding influence or condition; general mood or social environment: controversy troubling the air at the convention; an apology designed to clear the air
- a person's bearing, manner, or appearance
- affected, superior manners and graces
- public expression or publicity: give air to your opinions
- transportation or travel by aircraft: to go by air
- the medium through which radio signals are transmitted
- air conditioning
- a song or tune
- the main melody in a harmonized composition, usually the soprano or treble part
Origin: Middle English ; from Old French ; from Classical Latin aer ; from Classical Greek aēr, air, mist
- to let air into or through; put where air can dry, cool, freshen, etc.
- to make known publicly; publicize
- to broadcast on radio or television
- to become aired, dried, cooled, etc.
- to be broadcast on radio or television
air definition by American Heritage Dictionary
- a. A colorless, odorless, tasteless, gaseous mixture, mainly nitrogen (approximately 78 percent) and oxygen (approximately 21 percent) with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases.b. This mixture with varying amounts of moisture and particulate matter, enveloping the earth; the atmosphere.
- a. The sky; the firmament.b. A giant void; nothingness: The money vanished into thin air.
- An atmospheric movement; a breeze or wind.
- Aircraft: send troops to Europe by air.
- a. Public utterance; vent: gave air to their grievances.b. The electronic broadcast media: “often ridiculed . . . extremist groups on air” (Christian Science Monitor).
- A peculiar or characteristic impression; an aura.
- Personal bearing, appearance, or manner; mien.
- airs An affected, often haughty pose; affectation. See Synonyms at affectation.
- Music a. A melody or tune, especially in the soprano or tenor range.b. A solo with or without accompaniment.
- Air conditioning.
- Archaic Breath.
- To expose so that air can dry, cool, or freshen; ventilate.
- To give vent to publicly: airing my pet peeves. See Synonyms at vent1.
- To broadcast on television or radio: “The ad was submitted to CBS . . . which accepted and aired it” (New York).
- Of or relating to the air or the movement of air: an air tube.
- Existing or living in the air; aerial.
- Powered by compressed air: an air horn.
- Containing or inflated by air.
- Of or relating to aircraft or aeronautics.
- Of or relating to the broadcast or transmission of radio or television signals.
- Imaginary or unreal: “The guy had just hit it big . . . after ten years of eating air sandwiches” (Jonathan Kellerman).
Origin: Partly from Middle English air, gas, atmosphere (from Old French, from Latin āēr, from Greek; see wer-1 in Indo-European roots) and partly from French air, nature, quality, place of origin (from Latin ager, place, field; see agriculture, and Latin ārea, open space, threshing floor; see area). N., sense 9, from French air, tune, from Italian aria; see aria.
air - Computer Definition
air - Medical Definition
- A colorless, odorless, tasteless, gaseous mixture, approximately 78 percent nitrogen and approximately 21 percent oxygen with lesser amounts of argon, carbon dioxide, hydrogen, neon, helium, and other gases.
- This mixture, with varying amounts of moisture and particulate matter, enveloping Earth; the atmosphere.
- Any of various respiratory gases. No longer in technical use.
air - Phrases/Idioms
give (or get) the airâ
in the air
- current or prevalent
- not decided; not settled; still imaginary
on (or off) the air
take the air
up in the air
- not settled; not decided
- Informal angry; highly excited, agitated, etc.
walk on airor float on air
in the air
up in the air
air - Science Definition