"microbunch" meaning in English

{
  "etymology_templates": [
    {
      "args": {
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        "2": "micro",
        "3": "bunch"
      },
      "expansion": "micro- + bunch",
      "name": "prefix"
    }
  ],
  "etymology_text": "From micro- + bunch.",
  "forms": [
    {
      "form": "microbunches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "microbunch (plural microbunches)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "name": "Physics",
          "orig": "en:Physics",
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            "Sciences",
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            "Fundamental"
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        }
      ],
      "glosses": [
        "A short cluster of photons (or electrons) produced by a laser etc."
      ],
      "id": "en-microbunch-en-noun-4Nxs3kr9",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "cluster",
          "cluster"
        ],
        [
          "photon",
          "photon"
        ],
        [
          "electron",
          "electron"
        ],
        [
          "laser",
          "laser"
        ]
      ],
      "raw_glosses": [
        "(physics) A short cluster of photons (or electrons) produced by a laser etc."
      ],
      "related": [
        {
          "word": "microbunching"
        }
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "microbunch"
}

{
  "etymology_templates": [
    {
      "args": {
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        "2": "micro",
        "3": "bunch"
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      "expansion": "micro- + bunch",
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  ],
  "etymology_text": "From micro- + bunch.",
  "forms": [
    {
      "form": "microbunches",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "microbunch (plural microbunches)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "microbunching"
    }
  ],
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      "glosses": [
        "A short cluster of photons (or electrons) produced by a laser etc."
      ],
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        [
          "physics",
          "physics"
        ],
        [
          "cluster",
          "cluster"
        ],
        [
          "photon",
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        ],
        [
          "electron",
          "electron"
        ],
        [
          "laser",
          "laser"
        ]
      ],
      "raw_glosses": [
        "(physics) A short cluster of photons (or electrons) produced by a laser etc."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "microbunch"
}