"apropos of" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "à propos de"
      },
      "expansion": "à propos de",
      "name": "m"
    },
    {
      "args": {
        "1": "en",
        "2": "apropos"
      },
      "expansion": "apropos",
      "name": "m"
    }
  ],
  "etymology_text": "Calque of French à propos de. See apropos",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositions",
        "head": ""
      },
      "expansion": "apropos of",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "apropos of",
      "name": "en-prep"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English prepositions",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "apropos of nothing"
        }
      ],
      "examples": [
        {
          "ref": "1901 July 5, Claude Fuller, “Some Winter Reminders”, in The Agricultural Journal and Mining Record, volume 4, number 9, page 262",
          "text": "Apropos of pruning the grape, it may be pointed out here that this can be done when the season's growth has lost its green appearance and assumed a brown or greyish color.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Concerning; with regard to; about; apropos; in relation to."
      ],
      "id": "en-apropos_of-en-prep-D4PjKrfr",
      "links": [
        [
          "Concerning",
          "concerning#Preposition"
        ],
        [
          "with regard to",
          "with regard to"
        ],
        [
          "about",
          "about#Preposition"
        ],
        [
          "apropos",
          "apropos#Preposition"
        ]
      ]
    }
  ],
  "word": "apropos of"
}

{
  "derived": [
    {
      "word": "apropos of nothing"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "à propos de"
      },
      "expansion": "à propos de",
      "name": "m"
    },
    {
      "args": {
        "1": "en",
        "2": "apropos"
      },
      "expansion": "apropos",
      "name": "m"
    }
  ],
  "etymology_text": "Calque of French à propos de. See apropos",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prepositions",
        "head": ""
      },
      "expansion": "apropos of",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "apropos of",
      "name": "en-prep"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositions",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1901 July 5, Claude Fuller, “Some Winter Reminders”, in The Agricultural Journal and Mining Record, volume 4, number 9, page 262",
          "text": "Apropos of pruning the grape, it may be pointed out here that this can be done when the season's growth has lost its green appearance and assumed a brown or greyish color.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Concerning; with regard to; about; apropos; in relation to."
      ],
      "links": [
        [
          "Concerning",
          "concerning#Preposition"
        ],
        [
          "with regard to",
          "with regard to"
        ],
        [
          "about",
          "about#Preposition"
        ],
        [
          "apropos",
          "apropos#Preposition"
        ]
      ]
    }
  ],
  "word": "apropos of"
}