"sigma" meaning in Dutch

{
  "etymology_templates": [
    {
      "args": {
        "1": "nl",
        "2": "grc",
        "3": "σῖγμα"
      },
      "expansion": "Ancient Greek σῖγμα (sîgma)",
      "name": "bor"
    }
  ],
  "etymology_text": "From Ancient Greek σῖγμα (sîgma).",
  "forms": [
    {
      "form": "sigma's",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "sigmaatje",
      "tags": [
        "diminutive",
        "neuter"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "-'s",
        "3": "sigmaatje"
      },
      "expansion": "sigma f (plural sigma's, diminutive sigmaatje n)",
      "name": "nl-noun"
    }
  ],
  "hyphenation": [
    "sig‧ma"
  ],
  "lang": "Dutch",
  "lang_code": "nl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Dutch entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "nl",
          "name": "Greek letter names",
          "orig": "nl:Greek letter names",
          "parents": [
            "Letter names",
            "Letters, symbols, and punctuation",
            "Names",
            "Orthography",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Writing",
            "Fundamental",
            "Nouns",
            "Human behaviour",
            "Language",
            "Lemmas",
            "Human",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "sigmatisch"
        }
      ],
      "glosses": [
        "sigma (letter of the Greek alphabet)"
      ],
      "id": "en-sigma-nl-noun-N3v7Jqge",
      "links": [
        [
          "sigma",
          "sigma#English"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɪx.maː/"
    },
    {
      "audio": "Nl-sigma.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/8d/Nl-sigma.ogg/Nl-sigma.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/8d/Nl-sigma.ogg"
    }
  ],
  "word": "sigma"
}

{
  "derived": [
    {
      "word": "sigmatisch"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "nl",
        "2": "grc",
        "3": "σῖγμα"
      },
      "expansion": "Ancient Greek σῖγμα (sîgma)",
      "name": "bor"
    }
  ],
  "etymology_text": "From Ancient Greek σῖγμα (sîgma).",
  "forms": [
    {
      "form": "sigma's",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "sigmaatje",
      "tags": [
        "diminutive",
        "neuter"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f",
        "2": "-'s",
        "3": "sigmaatje"
      },
      "expansion": "sigma f (plural sigma's, diminutive sigmaatje n)",
      "name": "nl-noun"
    }
  ],
  "hyphenation": [
    "sig‧ma"
  ],
  "lang": "Dutch",
  "lang_code": "nl",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Dutch entries with incorrect language header",
        "Dutch feminine nouns",
        "Dutch lemmas",
        "Dutch nouns",
        "Dutch nouns with plural in -s",
        "Dutch terms borrowed from Ancient Greek",
        "Dutch terms derived from Ancient Greek",
        "Dutch terms with IPA pronunciation",
        "Dutch terms with audio links",
        "nl:Greek letter names"
      ],
      "glosses": [
        "sigma (letter of the Greek alphabet)"
      ],
      "links": [
        [
          "sigma",
          "sigma#English"
        ]
      ],
      "tags": [
        "feminine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɪx.maː/"
    },
    {
      "audio": "Nl-sigma.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/8d/Nl-sigma.ogg/Nl-sigma.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/8/8d/Nl-sigma.ogg"
    }
  ],
  "word": "sigma"
}