"on seen" meaning in All languages combined

{
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Social media",
          "orig": "en:Social media",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Of a electronic message sender, in the state where their message has been seen by the other party but not replied to."
      ],
      "id": "en-on_seen-en-prep_phrase-Vg4ec93H",
      "related": [
        {
          "word": "leave someone on seen"
        }
      ],
      "synonyms": [
        {
          "word": "on read"
        }
      ]
    }
  ],
  "word": "on seen"
}

{
  "lang": "English",
  "lang_code": "en",
  "pos": "prep_phrase",
  "related": [
    {
      "word": "leave someone on seen"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English prepositional phrases",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Social media"
      ],
      "glosses": [
        "Of a electronic message sender, in the state where their message has been seen by the other party but not replied to."
      ]
    }
  ],
  "synonyms": [
    {
      "word": "on read"
    }
  ],
  "word": "on seen"
}