"на-" meaning in Old Church Slavonic

{
  "etymology_templates": [
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*na-"
      },
      "expansion": "Proto-Slavic *na-",
      "name": "inh"
    },
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*na"
      },
      "expansion": "Proto-Slavic *na",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Slavic *na- prefix, from Proto-Slavic *na.",
  "forms": [
    {
      "form": "na-",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cu",
        "2": "prefix",
        "cat2": "verbal prefixes"
      },
      "expansion": "на- • (na-)",
      "name": "head"
    }
  ],
  "lang": "Old Church Slavonic",
  "lang_code": "cu",
  "pos": "prefix",
  "related": [
    {
      "_dis1": "0 0",
      "roman": "na",
      "word": "на"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "text": "на- (na-) + ити (iti, “to go”) → наити (naiti, “to find”, literally “to come upon”)"
        }
      ],
      "glosses": [
        "onto, upon"
      ],
      "id": "en-на--cu-prefix-MudDcSpB",
      "links": [
        [
          "onto",
          "onto"
        ],
        [
          "upon",
          "upon"
        ]
      ],
      "raw_glosses": [
        "(used with verbs) onto, upon"
      ],
      "raw_tags": [
        "used with verbs"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "8 92",
          "kind": "other",
          "name": "Old Church Slavonic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "на- (na-) + пити (piti, “to drink”) → напити (napiti, “to drink to the full; to quench one’s thirst; to get drunk”)"
        }
      ],
      "glosses": [
        "to repletion, to satiation, to the full, enough, too much"
      ],
      "id": "en-на--cu-prefix-omKmOF8C",
      "links": [
        [
          "repletion",
          "repletion"
        ],
        [
          "satiation",
          "satiation"
        ],
        [
          "to the full",
          "to the full"
        ],
        [
          "enough",
          "enough"
        ],
        [
          "too much",
          "too much"
        ]
      ],
      "raw_glosses": [
        "(used with verbs) to repletion, to satiation, to the full, enough, too much"
      ],
      "raw_tags": [
        "used with verbs"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "на-"
}

{
  "categories": [
    "Old Church Slavonic entries with incorrect language header",
    "Old Church Slavonic lemmas",
    "Old Church Slavonic prefixes",
    "Old Church Slavonic terms derived from Proto-Slavic",
    "Old Church Slavonic terms inherited from Proto-Slavic",
    "Old Church Slavonic verbal prefixes"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*na-"
      },
      "expansion": "Proto-Slavic *na-",
      "name": "inh"
    },
    {
      "args": {
        "1": "cu",
        "2": "sla-pro",
        "3": "*na"
      },
      "expansion": "Proto-Slavic *na",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Slavic *na- prefix, from Proto-Slavic *na.",
  "forms": [
    {
      "form": "na-",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "cu",
        "2": "prefix",
        "cat2": "verbal prefixes"
      },
      "expansion": "на- • (na-)",
      "name": "head"
    }
  ],
  "lang": "Old Church Slavonic",
  "lang_code": "cu",
  "pos": "prefix",
  "related": [
    {
      "roman": "na",
      "word": "на"
    }
  ],
  "senses": [
    {
      "examples": [
        {
          "text": "на- (na-) + ити (iti, “to go”) → наити (naiti, “to find”, literally “to come upon”)"
        }
      ],
      "glosses": [
        "onto, upon"
      ],
      "links": [
        [
          "onto",
          "onto"
        ],
        [
          "upon",
          "upon"
        ]
      ],
      "raw_glosses": [
        "(used with verbs) onto, upon"
      ],
      "raw_tags": [
        "used with verbs"
      ],
      "tags": [
        "morpheme"
      ]
    },
    {
      "examples": [
        {
          "text": "на- (na-) + пити (piti, “to drink”) → напити (napiti, “to drink to the full; to quench one’s thirst; to get drunk”)"
        }
      ],
      "glosses": [
        "to repletion, to satiation, to the full, enough, too much"
      ],
      "links": [
        [
          "repletion",
          "repletion"
        ],
        [
          "satiation",
          "satiation"
        ],
        [
          "to the full",
          "to the full"
        ],
        [
          "enough",
          "enough"
        ],
        [
          "too much",
          "too much"
        ]
      ],
      "raw_glosses": [
        "(used with verbs) to repletion, to satiation, to the full, enough, too much"
      ],
      "raw_tags": [
        "used with verbs"
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "на-"
}