"SFG" meaning in English

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      "form": "SFGs",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "signal-flow graph"
        }
      ],
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Electronics",
          "orig": "en:Electronics",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
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      ],
      "glosses": [
        "Initialism of signal-flow graph."
      ],
      "id": "en-SFG-en-noun-RpMq9aFy",
      "links": [
        [
          "electronics",
          "electronics"
        ],
        [
          "signal-flow graph",
          "signal-flow graph#English"
        ]
      ],
      "raw_glosses": [
        "(electronics, countable) Initialism of signal-flow graph."
      ],
      "tags": [
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        "alt-of",
        "countable",
        "initialism"
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      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "electronics",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "alt_of": [
        {
          "word": "sum frequency generation"
        }
      ],
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Spectroscopy",
          "orig": "en:Spectroscopy",
          "parents": [
            "Analytical chemistry",
            "Optics",
            "Physics",
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "Initialism of sum frequency generation."
      ],
      "id": "en-SFG-en-noun-PkPUKDIu",
      "links": [
        [
          "spectroscopy",
          "spectroscopy"
        ],
        [
          "sum frequency generation",
          "sum frequency generation#English"
        ]
      ],
      "qualifier": "spectroscopy",
      "raw_glosses": [
        "(spectroscopy) Initialism of sum frequency generation."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism",
        "uncountable"
      ]
    }
  ],
  "wikipedia": [
    "Signal-flow graph"
  ],
  "word": "SFG"
}

{
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    "English countable nouns",
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  "forms": [
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      "tags": [
        "plural"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "signal-flow graph"
        }
      ],
      "categories": [
        "English countable nouns",
        "English initialisms",
        "en:Electronics"
      ],
      "glosses": [
        "Initialism of signal-flow graph."
      ],
      "links": [
        [
          "electronics",
          "electronics"
        ],
        [
          "signal-flow graph",
          "signal-flow graph#English"
        ]
      ],
      "raw_glosses": [
        "(electronics, countable) Initialism of signal-flow graph."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "countable",
        "initialism"
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      "topics": [
        "business",
        "electrical-engineering",
        "electricity",
        "electromagnetism",
        "electronics",
        "energy",
        "engineering",
        "natural-sciences",
        "physical-sciences",
        "physics"
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    },
    {
      "alt_of": [
        {
          "word": "sum frequency generation"
        }
      ],
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        "English initialisms",
        "en:Spectroscopy"
      ],
      "glosses": [
        "Initialism of sum frequency generation."
      ],
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        [
          "spectroscopy",
          "spectroscopy"
        ],
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          "sum frequency generation",
          "sum frequency generation#English"
        ]
      ],
      "qualifier": "spectroscopy",
      "raw_glosses": [
        "(spectroscopy) Initialism of sum frequency generation."
      ],
      "tags": [
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  "wikipedia": [
    "Signal-flow graph"
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  "word": "SFG"
}