"μαθαίνομαι" meaning in Greek

{
  "forms": [
    {
      "form": "mathaínomai",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "μαθαίνω",
      "tags": [
        "active"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "verbs",
        "head": "",
        "sort": ""
      },
      "expansion": "μαθαίνομαι • (mathaínomai)",
      "name": "head"
    },
    {
      "args": {
        "active": "μαθαίνω",
        "past": "-",
        "tenses": "pres",
        "type": "passive"
      },
      "expansion": "μαθαίνομαι • (mathaínomai) passive (past —, active μαθαίνω) found only in the present tense",
      "name": "el-verb"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "extra": "mathaíno",
          "word": "μαθαίνω"
        }
      ],
      "glosses": [
        "passive of μαθαίνω (mathaíno)"
      ],
      "id": "en-μαθαίνομαι-el-verb-lgxfhAsU",
      "links": [
        [
          "μαθαίνω",
          "μαθαίνω#Greek"
        ]
      ],
      "tags": [
        "form-of",
        "no-past",
        "passive"
      ]
    }
  ],
  "word": "μαθαίνομαι"
}

{
  "forms": [
    {
      "form": "mathaínomai",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "μαθαίνω",
      "tags": [
        "active"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "verbs",
        "head": "",
        "sort": ""
      },
      "expansion": "μαθαίνομαι • (mathaínomai)",
      "name": "head"
    },
    {
      "args": {
        "active": "μαθαίνω",
        "past": "-",
        "tenses": "pres",
        "type": "passive"
      },
      "expansion": "μαθαίνομαι • (mathaínomai) passive (past —, active μαθαίνω) found only in the present tense",
      "name": "el-verb"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Greek entries with incorrect language header",
        "Greek lemmas",
        "Greek passive verbs",
        "Greek verbs"
      ],
      "form_of": [
        {
          "extra": "mathaíno",
          "word": "μαθαίνω"
        }
      ],
      "glosses": [
        "passive of μαθαίνω (mathaíno)"
      ],
      "links": [
        [
          "μαθαίνω",
          "μαθαίνω#Greek"
        ]
      ],
      "tags": [
        "form-of",
        "no-past",
        "passive"
      ]
    }
  ],
  "word": "μαθαίνομαι"
}