"rarefact" meaning in All languages combined

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "frm",
        "3": "raréfaction"
      },
      "expansion": "Middle French raréfaction",
      "name": "uder"
    }
  ],
  "etymology_text": "From Middle French raréfaction.",
  "forms": [
    {
      "form": "rarefacts",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "rarefacting",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "rarefacted",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "rarefacted",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rarefact (third-person singular simple present rarefacts, present participle rarefacting, simple past and past participle rarefacted)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Russian translations",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2013, Beth Schrope, Surgical and Interventional Ultrasound:",
          "text": "As the ultrasound wave compresses and rarefacts through the medium, it causes microbubbles in the tissue to contract and expand.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To reduce in density."
      ],
      "id": "en-rarefact-en-verb-bzAhp1XW",
      "links": [
        [
          "transitive",
          "transitive"
        ],
        [
          "intransitive",
          "intransitive"
        ],
        [
          "reduce",
          "reduce"
        ],
        [
          "density",
          "density"
        ]
      ],
      "raw_glosses": [
        "(transitive, intransitive) To reduce in density."
      ],
      "related": [
        {
          "word": "rarefaction"
        }
      ],
      "tags": [
        "intransitive",
        "transitive"
      ],
      "translations": [
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "razredítʹ",
          "sense": "reduce in density",
          "word": "разреди́ть"
        }
      ]
    }
  ],
  "word": "rarefact"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "frm",
        "3": "raréfaction"
      },
      "expansion": "Middle French raréfaction",
      "name": "uder"
    }
  ],
  "etymology_text": "From Middle French raréfaction.",
  "forms": [
    {
      "form": "rarefacts",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "rarefacting",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "rarefacted",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "rarefacted",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "rarefact (third-person singular simple present rarefacts, present participle rarefacting, simple past and past participle rarefacted)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "related": [
    {
      "word": "rarefaction"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English intransitive verbs",
        "English lemmas",
        "English terms derived from Middle French",
        "English terms with quotations",
        "English transitive verbs",
        "English undefined derivations",
        "English verbs",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Russian translations"
      ],
      "examples": [
        {
          "ref": "2013, Beth Schrope, Surgical and Interventional Ultrasound:",
          "text": "As the ultrasound wave compresses and rarefacts through the medium, it causes microbubbles in the tissue to contract and expand.",
          "type": "quote"
        }
      ],
      "glosses": [
        "To reduce in density."
      ],
      "links": [
        [
          "transitive",
          "transitive"
        ],
        [
          "intransitive",
          "intransitive"
        ],
        [
          "reduce",
          "reduce"
        ],
        [
          "density",
          "density"
        ]
      ],
      "raw_glosses": [
        "(transitive, intransitive) To reduce in density."
      ],
      "tags": [
        "intransitive",
        "transitive"
      ]
    }
  ],
  "translations": [
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "razredítʹ",
      "sense": "reduce in density",
      "word": "разреди́ть"
    }
  ],
  "word": "rarefact"
}