"collimation" meaning in English

{
  "forms": [
    {
      "form": "collimations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "collimation (countable and uncountable, plural collimations)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "autocollimation"
        },
        {
          "word": "recollimation"
        },
        {
          "word": "supercollimation"
        }
      ],
      "glosses": [
        "The act of collimating or something collimated; aligning lenses along line of sight to minimize aberrations."
      ],
      "id": "en-collimation-en-noun-F-6g7~kq",
      "links": [
        [
          "collimating",
          "collimate"
        ],
        [
          "collimated",
          "collimated"
        ]
      ],
      "related": [
        {
          "word": "collimate"
        },
        {
          "word": "collimator"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-eɪʃən"
    }
  ],
  "word": "collimation"
}

{
  "derived": [
    {
      "word": "autocollimation"
    },
    {
      "word": "recollimation"
    },
    {
      "word": "supercollimation"
    }
  ],
  "forms": [
    {
      "form": "collimations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "collimation (countable and uncountable, plural collimations)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "collimate"
    },
    {
      "word": "collimator"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English uncountable nouns",
        "Pages with 2 entries",
        "Pages with entries",
        "Rhymes:English/eɪʃən",
        "Rhymes:English/eɪʃən/4 syllables"
      ],
      "glosses": [
        "The act of collimating or something collimated; aligning lenses along line of sight to minimize aberrations."
      ],
      "links": [
        [
          "collimating",
          "collimate"
        ],
        [
          "collimated",
          "collimated"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-eɪʃən"
    }
  ],
  "word": "collimation"
}