"-ա-" meaning in Armenian

{
  "etymology_templates": [
    {
      "args": {
        "1": "hy",
        "2": "axm",
        "3": "-ա-"
      },
      "expansion": "Middle Armenian -ա- (-a-)",
      "name": "inh"
    }
  ],
  "etymology_text": "From Middle Armenian -ա- (-a-).",
  "forms": [
    {
      "form": "-a-",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "hy",
        "2": "interfix"
      },
      "expansion": "-ա- • (-a-)",
      "name": "head"
    }
  ],
  "lang": "Armenian",
  "lang_code": "hy",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Armenian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Armenian interfixes",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "գետ (get, “river”) + -ա- (-a-) + ձի (ji, “horse”) → գետաձի (getaji, “hippopotamus”)",
          "type": "example"
        }
      ],
      "glosses": [
        "an agglutinating interfix"
      ],
      "id": "en--ա--hy-interfix-ebp3Kyi3",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɑ]",
      "tags": [
        "Eastern-Armenian",
        "standard"
      ]
    },
    {
      "ipa": "[ɑ]",
      "tags": [
        "Western-Armenian",
        "standard"
      ]
    }
  ],
  "word": "-ա-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "hy",
        "2": "axm",
        "3": "-ա-"
      },
      "expansion": "Middle Armenian -ա- (-a-)",
      "name": "inh"
    }
  ],
  "etymology_text": "From Middle Armenian -ա- (-a-).",
  "forms": [
    {
      "form": "-a-",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "hy",
        "2": "interfix"
      },
      "expansion": "-ա- • (-a-)",
      "name": "head"
    }
  ],
  "lang": "Armenian",
  "lang_code": "hy",
  "pos": "interfix",
  "senses": [
    {
      "categories": [
        "Armenian entries with incorrect language header",
        "Armenian interfixes",
        "Armenian lemmas",
        "Armenian terms derived from Middle Armenian",
        "Armenian terms inherited from Middle Armenian",
        "Armenian terms with IPA pronunciation"
      ],
      "examples": [
        {
          "text": "գետ (get, “river”) + -ա- (-a-) + ձի (ji, “horse”) → գետաձի (getaji, “hippopotamus”)",
          "type": "example"
        }
      ],
      "glosses": [
        "an agglutinating interfix"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɑ]",
      "tags": [
        "Eastern-Armenian",
        "standard"
      ]
    },
    {
      "ipa": "[ɑ]",
      "tags": [
        "Western-Armenian",
        "standard"
      ]
    }
  ],
  "word": "-ա-"
}