"o-" meaning in Mohawk

{
  "etymology_text": "io- with loss of initial glide",
  "head_templates": [
    {
      "args": {
        "1": "moh",
        "2": "prefix"
      },
      "expansion": "o-",
      "name": "head"
    }
  ],
  "lang": "Mohawk",
  "lang_code": "moh",
  "pos": "prefix",
  "senses": [
    {
      "glosses": [
        "noun prefix"
      ],
      "id": "en-o--moh-prefix-DFTt~bTU",
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "0 100",
          "kind": "other",
          "name": "Mohawk entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "her (in kinship terms)"
      ],
      "id": "en-o--moh-prefix-4-rNRB8P",
      "links": [
        [
          "her",
          "her"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "o-"
}

{
  "categories": [
    "Mohawk entries with incorrect language header",
    "Mohawk lemmas",
    "Mohawk prefixes",
    "Pages with 25 entries",
    "Pages with entries"
  ],
  "etymology_text": "io- with loss of initial glide",
  "head_templates": [
    {
      "args": {
        "1": "moh",
        "2": "prefix"
      },
      "expansion": "o-",
      "name": "head"
    }
  ],
  "lang": "Mohawk",
  "lang_code": "moh",
  "pos": "prefix",
  "senses": [
    {
      "glosses": [
        "noun prefix"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "glosses": [
        "her (in kinship terms)"
      ],
      "links": [
        [
          "her",
          "her"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "o-"
}