"преимущественно" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "преиму́щественный",
        "3": "-о"
      },
      "expansion": "преиму́щественный (preimúščestvennyj) + -о (-o)",
      "name": "af"
    }
  ],
  "etymology_text": "преиму́щественный (preimúščestvennyj) + -о (-o)",
  "forms": [
    {
      "form": "преиму́щественно",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "preimúščestvenno",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "преиму́щественно"
      },
      "expansion": "преиму́щественно • (preimúščestvenno)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "categories": [
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Russian terms suffixed with -о",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "predominantly (in a predominant manner)"
      ],
      "id": "en-преимущественно-ru-adv-TdaNxxxS",
      "links": [
        [
          "predominantly",
          "predominantly"
        ]
      ]
    },
    {
      "glosses": [
        "mostly"
      ],
      "id": "en-преимущественно-ru-adv-9lQC4kex",
      "links": [
        [
          "mostly",
          "mostly"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[prʲɪɪˈmuɕːɪstvʲɪn(ː)ə]"
    },
    {
      "audio": "Ru-преимущественно.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6f/Ru-%D0%BF%D1%80%D0%B5%D0%B8%D0%BC%D1%83%D1%89%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE.ogg/Ru-%D0%BF%D1%80%D0%B5%D0%B8%D0%BC%D1%83%D1%89%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/6f/Ru-%D0%BF%D1%80%D0%B5%D0%B8%D0%BC%D1%83%D1%89%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE.ogg"
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0",
      "roman": "po preimúščestvu",
      "word": "по преиму́ществу"
    }
  ],
  "word": "преимущественно"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Russian 6-syllable words",
    "Russian adverbs",
    "Russian entries with incorrect language header",
    "Russian lemmas",
    "Russian terms suffixed with -о",
    "Russian terms with IPA pronunciation"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "преиму́щественный",
        "3": "-о"
      },
      "expansion": "преиму́щественный (preimúščestvennyj) + -о (-o)",
      "name": "af"
    }
  ],
  "etymology_text": "преиму́щественный (preimúščestvennyj) + -о (-o)",
  "forms": [
    {
      "form": "преиму́щественно",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "preimúščestvenno",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "преиму́щественно"
      },
      "expansion": "преиму́щественно • (preimúščestvenno)",
      "name": "ru-adv"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "adv",
  "senses": [
    {
      "glosses": [
        "predominantly (in a predominant manner)"
      ],
      "links": [
        [
          "predominantly",
          "predominantly"
        ]
      ]
    },
    {
      "glosses": [
        "mostly"
      ],
      "links": [
        [
          "mostly",
          "mostly"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[prʲɪɪˈmuɕːɪstvʲɪn(ː)ə]"
    },
    {
      "audio": "Ru-преимущественно.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/6/6f/Ru-%D0%BF%D1%80%D0%B5%D0%B8%D0%BC%D1%83%D1%89%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE.ogg/Ru-%D0%BF%D1%80%D0%B5%D0%B8%D0%BC%D1%83%D1%89%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/6/6f/Ru-%D0%BF%D1%80%D0%B5%D0%B8%D0%BC%D1%83%D1%89%D0%B5%D1%81%D1%82%D0%B2%D0%B5%D0%BD%D0%BD%D0%BE.ogg"
    }
  ],
  "synonyms": [
    {
      "roman": "po preimúščestvu",
      "word": "по преиму́ществу"
    }
  ],
  "word": "преимущественно"
}