"per os" meaning in Translingual

{
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "la",
        "3": "per",
        "4": "",
        "5": "through"
      },
      "expansion": "Latin per (“through”)",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "ōs",
        "3": "",
        "4": "mouth"
      },
      "expansion": "ōs (“mouth”)",
      "name": "m"
    }
  ],
  "etymology_text": "From Latin per (“through”) + ōs (“mouth”).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "adverb",
        "head": "per os"
      },
      "expansion": "per os",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Medicine",
          "orig": "mul:Medicine",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "By mouth; orally."
      ],
      "id": "en-per_os-mul-adv-p3KW5N6U",
      "links": [
        [
          "medicine",
          "medicine"
        ]
      ],
      "raw_glosses": [
        "(medicine) By mouth; orally."
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "per os"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "la",
        "3": "per",
        "4": "",
        "5": "through"
      },
      "expansion": "Latin per (“through”)",
      "name": "der"
    },
    {
      "args": {
        "1": "la",
        "2": "ōs",
        "3": "",
        "4": "mouth"
      },
      "expansion": "ōs (“mouth”)",
      "name": "m"
    }
  ],
  "etymology_text": "From Latin per (“through”) + ōs (“mouth”).",
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "adverb",
        "head": "per os"
      },
      "expansion": "per os",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        "Translingual adverbs",
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual terms derived from Latin",
        "Translingual terms with redundant head parameter",
        "mul:Medicine"
      ],
      "glosses": [
        "By mouth; orally."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ]
      ],
      "raw_glosses": [
        "(medicine) By mouth; orally."
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "per os"
}