"stationary front" meaning in English

{
  "forms": [
    {
      "form": "stationary fronts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stationary front (plural stationary fronts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "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 Italian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Japanese translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Romanian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Atmospheric phenomena",
          "orig": "en:Atmospheric phenomena",
          "parents": [
            "Atmosphere",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Meteorology",
          "orig": "en:Meteorology",
          "parents": [
            "Atmosphere",
            "Earth sciences",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A boundary between air masses that is neither advancing nor retreating"
      ],
      "id": "en-stationary_front-en-noun-iztKS4pl",
      "links": [
        [
          "meteorology",
          "meteorology"
        ],
        [
          "boundary",
          "boundary"
        ],
        [
          "advancing",
          "advancing"
        ],
        [
          "retreating",
          "retreating"
        ]
      ],
      "raw_glosses": [
        "(meteorology) A boundary between air masses that is neither advancing nor retreating"
      ],
      "related": [
        {
          "word": "weather front"
        }
      ],
      "topics": [
        "climatology",
        "meteorology",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "it",
          "lang": "Italian",
          "sense": "boundary between air masses",
          "tags": [
            "masculine"
          ],
          "word": "fronte stazionario"
        },
        {
          "alt": "ていたいぜんせん",
          "code": "ja",
          "lang": "Japanese",
          "roman": "teitai-zensen",
          "sense": "boundary between air masses",
          "word": "停滞前線"
        },
        {
          "code": "ro",
          "lang": "Romanian",
          "sense": "boundary between air masses",
          "tags": [
            "neuter"
          ],
          "word": "front staționar"
        }
      ]
    }
  ],
  "word": "stationary front"
}

{
  "forms": [
    {
      "form": "stationary fronts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "stationary front (plural stationary fronts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "weather front"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Italian translations",
        "Terms with Japanese translations",
        "Terms with Romanian translations",
        "en:Atmospheric phenomena",
        "en:Meteorology"
      ],
      "glosses": [
        "A boundary between air masses that is neither advancing nor retreating"
      ],
      "links": [
        [
          "meteorology",
          "meteorology"
        ],
        [
          "boundary",
          "boundary"
        ],
        [
          "advancing",
          "advancing"
        ],
        [
          "retreating",
          "retreating"
        ]
      ],
      "raw_glosses": [
        "(meteorology) A boundary between air masses that is neither advancing nor retreating"
      ],
      "topics": [
        "climatology",
        "meteorology",
        "natural-sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "it",
      "lang": "Italian",
      "sense": "boundary between air masses",
      "tags": [
        "masculine"
      ],
      "word": "fronte stazionario"
    },
    {
      "alt": "ていたいぜんせん",
      "code": "ja",
      "lang": "Japanese",
      "roman": "teitai-zensen",
      "sense": "boundary between air masses",
      "word": "停滞前線"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "boundary between air masses",
      "tags": [
        "neuter"
      ],
      "word": "front staționar"
    }
  ],
  "word": "stationary front"
}