"on the air" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase"
      },
      "expansion": "on the air",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Broadcasting",
          "orig": "en:Broadcasting",
          "parents": [
            "Media",
            "Telecommunications",
            "Communication",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2006 January 3, Penn Jillette, Michael Goudeau, 0:04 from the start, in Penn Radio, number 1",
          "text": "Are we starting? We're starting.\nLooks like it.\nAre we on the air? No one even told me we're on the air.\nWe're not on the air.\nWe're not on the air, you're sure?\nNo.\nCan someone tell us- are we on the air? Someone know?\nNobody knows.\nNobody knows. Nobody knows if we're on the air. Anyway, this is Penn Jillette, in Las Vegas, not even knowing if we're on the air. They just snuck up on us like that. But it's after 11.\nIt's 11 o'clock, we must be on the air.\nWhich is 2 o'clock in New York and 1 o'clock in Chicago, and I guess we're on the air.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of on air."
      ],
      "id": "en-on_the_air-en-prep_phrase-24uT2zOz",
      "links": [
        [
          "broadcasting",
          "broadcasting#Noun"
        ],
        [
          "on air",
          "on air#English"
        ]
      ],
      "raw_glosses": [
        "(broadcasting) Synonym of on air."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "on air"
        },
        {
          "tags": [
            "attributive",
            "especially"
          ],
          "word": "on-the-air"
        }
      ],
      "topics": [
        "broadcasting",
        "media"
      ]
    }
  ],
  "word": "on the air"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositional phrase"
      },
      "expansion": "on the air",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "English terms with quotations",
        "en:Broadcasting"
      ],
      "examples": [
        {
          "ref": "2006 January 3, Penn Jillette, Michael Goudeau, 0:04 from the start, in Penn Radio, number 1",
          "text": "Are we starting? We're starting.\nLooks like it.\nAre we on the air? No one even told me we're on the air.\nWe're not on the air.\nWe're not on the air, you're sure?\nNo.\nCan someone tell us- are we on the air? Someone know?\nNobody knows.\nNobody knows. Nobody knows if we're on the air. Anyway, this is Penn Jillette, in Las Vegas, not even knowing if we're on the air. They just snuck up on us like that. But it's after 11.\nIt's 11 o'clock, we must be on the air.\nWhich is 2 o'clock in New York and 1 o'clock in Chicago, and I guess we're on the air.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Synonym of on air."
      ],
      "links": [
        [
          "broadcasting",
          "broadcasting#Noun"
        ],
        [
          "on air",
          "on air#English"
        ]
      ],
      "raw_glosses": [
        "(broadcasting) Synonym of on air."
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "on air"
        }
      ],
      "topics": [
        "broadcasting",
        "media"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "attributive",
        "especially"
      ],
      "word": "on-the-air"
    }
  ],
  "word": "on the air"
}