"acceleration" meaning in English

{
  "forms": [
    {
      "form": "acceleration",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "accelerations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "hyphenation": "ac‧cel‧er‧a‧tion",
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "text": "As the plane took off, the acceleration pressed her into her seat."
        }
      ],
      "glosses": [
        "Acceleration is a change in speed."
      ],
      "id": "simple-acceleration-en-noun-tQp~WBq-",
      "raw_tags": [
        "uncountable"
      ]
    },
    {
      "categories": [],
      "glosses": [
        "Acceleration is by how much a speed or velocity goes up."
      ],
      "id": "simple-acceleration-en-noun-J6S0zBmX",
      "raw_tags": [
        "countable"
      ]
    },
    {
      "glosses": [
        "derivative for velocity, has formula a= lim _(Δx→0)(Δv)/(Δt) ."
      ],
      "id": "simple-acceleration-en-noun-gmsOwvln"
    }
  ],
  "sounds": [
    {
      "enpr": "əksĕlərā'shən"
    },
    {
      "ipa": "/ək.sɛl.əˈreɪ.ʃən/"
    },
    {
      "sampa": "/@ksEl@\"reIS@n/"
    },
    {
      "audio": "en-us-acceleration.ogg",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "acceleration"
}

{
  "forms": [
    {
      "form": "acceleration",
      "tags": [
        "singular"
      ]
    },
    {
      "form": "accelerations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "noun"
    }
  ],
  "hyphenation": "ac‧cel‧er‧a‧tion",
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Uncountable nouns"
      ],
      "examples": [
        {
          "text": "As the plane took off, the acceleration pressed her into her seat."
        }
      ],
      "glosses": [
        "Acceleration is a change in speed."
      ],
      "raw_tags": [
        "uncountable"
      ]
    },
    {
      "categories": [
        "Countable nouns"
      ],
      "glosses": [
        "Acceleration is by how much a speed or velocity goes up."
      ],
      "raw_tags": [
        "countable"
      ]
    },
    {
      "glosses": [
        "derivative for velocity, has formula a= lim _(Δx→0)(Δv)/(Δt) ."
      ]
    }
  ],
  "sounds": [
    {
      "enpr": "əksĕlərā'shən"
    },
    {
      "ipa": "/ək.sɛl.əˈreɪ.ʃən/"
    },
    {
      "sampa": "/@ksEl@\"reIS@n/"
    },
    {
      "audio": "en-us-acceleration.ogg",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "acceleration"
}