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Definition of 'air'

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  1. 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"
  2. travel via aircraft; "air travel involves too much waiting in airports"; "if you've time to spare go by air"
       Synonyms: air travel aviation
  3. the region above the ground; "her hand stopped in mid air"; "he threw the ball into the air"
  4. medium for radio and television broadcasting; "the program was on the air from 9 til midnight"; "the president used the airwaves to take his message to the people"
       Synonyms: airwave
  5. a slight wind (usually refreshing); "the breeze was cooled by the lake"; "as he waited he could feel the air on his neck"
       Synonyms: breeze zephyr gentle wind
  6. a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance"
       Synonyms: aura atmosphere
  7. the mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere"; "it was exposed to the air"
       Synonyms: atmosphere
  8. a succession of notes forming a distinctive sequence; "she was humming an air from Beethoven"
       Synonyms: tune melody strain melodic line line melodic phrase
  9. once thought to be one of four elements composing the universe (Empedocles)


  1. expose to fresh air; "aerate your old sneakers"
       Synonyms: air out aerate
  2. be broadcast; "This show will air Saturdays at 2 P.M."
  3. broadcast over the airwaves, as in radio or television; "We cannot air this X-rated song"
       Synonyms: send broadcast beam transmit
  4. make public; "She aired her opinions on welfare"
       Synonyms: publicize publicise bare
  5. expose to warm or heated air, so as to dry; "Air linen"
  6. expose to cool or cold air so as to cool or freshen; "air the old winter clothes"; "air out the smoke-filled rooms"
       Synonyms: vent ventilate air out


  1. relating to or characteristic of or occurring in the air; "air war"; "air safety"; "air travel"
       Antonyms: land sea

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