"-avisti" meaning in Latin

{
  "descendants": [],
  "etymology_text": "From -istī, the second person singular present perfect active ending, attached to the infix -āv-.",
  "forms": [
    {
      "form": "-āvistī",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "suffix form",
        "head": "-āvistī"
      },
      "expansion": "-āvistī",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin 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"
        }
      ],
      "form_of": [
        {
          "extra": "first conjugation; verbs with the perfect infix -av-",
          "word": "-ō"
        }
      ],
      "glosses": [
        "second-person singular perfect active indicative of -ō (first conjugation; verbs with the perfect infix -av-)"
      ],
      "id": "en--avisti-la-suffix-~gqSFqK7",
      "links": [
        [
          "-ō",
          "-o#Latin"
        ],
        [
          "-av-",
          "-av-#Latin"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "poetic",
            "syncope"
          ],
          "word": "-āstī"
        }
      ],
      "tags": [
        "active",
        "form-of",
        "indicative",
        "morpheme",
        "perfect",
        "second-person",
        "singular"
      ]
    }
  ],
  "word": "-avisti"
}

{
  "descendants": [],
  "etymology_text": "From -istī, the second person singular present perfect active ending, attached to the infix -āv-.",
  "forms": [
    {
      "form": "-āvistī",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "suffix form",
        "head": "-āvistī"
      },
      "expansion": "-āvistī",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "Latin entries with incorrect language header",
        "Latin non-lemma forms",
        "Latin suffix forms",
        "Pages with 1 entry"
      ],
      "form_of": [
        {
          "extra": "first conjugation; verbs with the perfect infix -av-",
          "word": "-ō"
        }
      ],
      "glosses": [
        "second-person singular perfect active indicative of -ō (first conjugation; verbs with the perfect infix -av-)"
      ],
      "links": [
        [
          "-ō",
          "-o#Latin"
        ],
        [
          "-av-",
          "-av-#Latin"
        ]
      ],
      "tags": [
        "active",
        "form-of",
        "indicative",
        "morpheme",
        "perfect",
        "second-person",
        "singular"
      ]
    }
  ],
  "synonyms": [
    {
      "tags": [
        "poetic",
        "syncope"
      ],
      "word": "-āstī"
    }
  ],
  "word": "-avisti"
}