"περί" meaning in Greek

{
  "etymology_templates": [
    {
      "args": {
        "1": "el",
        "2": "grc",
        "3": "περί"
      },
      "expansion": "Ancient Greek περί (perí)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek περί (perí).",
  "forms": [
    {
      "form": "perí",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "preposition",
        "head": "",
        "sort": ""
      },
      "expansion": "περί • (perí)",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "περί • (perí)",
      "name": "el-prep"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "el",
          "name": "Mathematics",
          "orig": "el:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "75 25",
          "kind": "other",
          "name": "Greek entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "52 48",
          "kind": "other",
          "name": "Greek prepositions",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "80 20",
          "kind": "other",
          "name": "Greek undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "about five hundred drachmas",
          "roman": "perí tis pentakósies drachmés",
          "text": "περί τις πεντακόσιες δραχμές",
          "type": "example"
        }
      ],
      "glosses": [
        "about, approximately"
      ],
      "id": "en-περί-el-prep-8~9R4mOv",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "about",
          "about"
        ],
        [
          "approximately",
          "approximately"
        ]
      ],
      "raw_glosses": [
        "(mathematics) about, approximately"
      ],
      "synonyms": [
        {
          "_dis1": "100 0",
          "roman": "perípou",
          "sense": "approximately",
          "word": "περίπου"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    },
    {
      "categories": [
        {
          "_dis": "52 48",
          "kind": "other",
          "name": "Greek prepositions",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "I didn't know what it was about.",
          "roman": "Den íxera perí tínos prókeitai.",
          "text": "Δεν ήξερα περί τίνος πρόκειται.",
          "type": "example"
        }
      ],
      "glosses": [
        "about, concerning"
      ],
      "id": "en-περί-el-prep-ySUrdS4M",
      "links": [
        [
          "about",
          "about"
        ],
        [
          "concerning",
          "concerning"
        ]
      ],
      "synonyms": [
        {
          "_dis1": "12 88",
          "roman": "gia",
          "sense": "concerning",
          "word": "για"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/peˈɾi/"
    }
  ],
  "word": "περί"
}

{
  "categories": [
    "Greek entries with incorrect language header",
    "Greek lemmas",
    "Greek prepositions",
    "Greek terms derived from Ancient Greek",
    "Greek terms with IPA pronunciation",
    "Greek undefined derivations"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "el",
        "2": "grc",
        "3": "περί"
      },
      "expansion": "Ancient Greek περί (perí)",
      "name": "uder"
    }
  ],
  "etymology_text": "From Ancient Greek περί (perí).",
  "forms": [
    {
      "form": "perí",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "el",
        "2": "preposition",
        "head": "",
        "sort": ""
      },
      "expansion": "περί • (perí)",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "περί • (perí)",
      "name": "el-prep"
    }
  ],
  "lang": "Greek",
  "lang_code": "el",
  "pos": "prep",
  "senses": [
    {
      "categories": [
        "Greek terms with usage examples",
        "el:Mathematics"
      ],
      "examples": [
        {
          "english": "about five hundred drachmas",
          "roman": "perí tis pentakósies drachmés",
          "text": "περί τις πεντακόσιες δραχμές",
          "type": "example"
        }
      ],
      "glosses": [
        "about, approximately"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "about",
          "about"
        ],
        [
          "approximately",
          "approximately"
        ]
      ],
      "raw_glosses": [
        "(mathematics) about, approximately"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    },
    {
      "categories": [
        "Greek terms with usage examples"
      ],
      "examples": [
        {
          "english": "I didn't know what it was about.",
          "roman": "Den íxera perí tínos prókeitai.",
          "text": "Δεν ήξερα περί τίνος πρόκειται.",
          "type": "example"
        }
      ],
      "glosses": [
        "about, concerning"
      ],
      "links": [
        [
          "about",
          "about"
        ],
        [
          "concerning",
          "concerning"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/peˈɾi/"
    }
  ],
  "synonyms": [
    {
      "roman": "perípou",
      "sense": "approximately",
      "word": "περίπου"
    },
    {
      "roman": "gia",
      "sense": "concerning",
      "word": "για"
    }
  ],
  "word": "περί"
}