"ⲥⲁ-" meaning in Coptic

{
  "etymology_templates": [
    {
      "args": {
        "1": "cop",
        "2": "egy",
        "3": "z"
      },
      "expansion": "Egyptian z",
      "name": "inh"
    }
  ],
  "etymology_text": "From Egyptian z. z:A1*Z1",
  "forms": [
    {
      "form": "sa-",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cop",
        "2": "prefix",
        "g": "m"
      },
      "expansion": "ⲥⲁ- • (sa-) m",
      "name": "head"
    }
  ],
  "lang": "Coptic",
  "lang_code": "cop",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Bohairic Coptic",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Coptic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "profession of"
      ],
      "id": "en-ⲥⲁ--cop-prefix-udo~89wv",
      "links": [
        [
          "profession",
          "profession#English"
        ]
      ],
      "raw_glosses": [
        "(Bohairic) profession of"
      ],
      "tags": [
        "Bohairic",
        "morpheme"
      ]
    }
  ],
  "word": "ⲥⲁ-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cop",
        "2": "egy",
        "3": "z"
      },
      "expansion": "Egyptian z",
      "name": "inh"
    }
  ],
  "etymology_text": "From Egyptian z. z:A1*Z1",
  "forms": [
    {
      "form": "sa-",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cop",
        "2": "prefix",
        "g": "m"
      },
      "expansion": "ⲥⲁ- • (sa-) m",
      "name": "head"
    }
  ],
  "lang": "Coptic",
  "lang_code": "cop",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Bohairic Coptic",
        "Coptic entries with incorrect language header",
        "Coptic lemmas",
        "Coptic prefixes",
        "Coptic terms derived from Egyptian",
        "Coptic terms inherited from Egyptian",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "profession of"
      ],
      "links": [
        [
          "profession",
          "profession#English"
        ]
      ],
      "raw_glosses": [
        "(Bohairic) profession of"
      ],
      "tags": [
        "Bohairic",
        "morpheme"
      ]
    }
  ],
  "word": "ⲥⲁ-"
}