"redshift" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de red et de shift."
  ],
  "forms": [
    {
      "form": "redshifts",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en espagnol de l’astronomie",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Wiktionnaire:Exemples manquants en espagnol",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Décalage vers le rouge."
      ],
      "id": "fr-redshift-en-noun-JZB9xRq0",
      "topics": [
        "astronomy"
      ]
    }
  ],
  "word": "redshift"
}

{
  "categories": [
    "Compositions en anglais",
    "Lemmes en anglais",
    "Noms communs en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "Composé de red et de shift."
  ],
  "forms": [
    {
      "form": "redshifts",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en espagnol de l’astronomie",
        "Wiktionnaire:Exemples manquants en espagnol"
      ],
      "glosses": [
        "Décalage vers le rouge."
      ],
      "topics": [
        "astronomy"
      ]
    }
  ],
  "word": "redshift"
}