"正弦波" meaning in Japanese

{
  "forms": [
    {
      "form": "正弦波",
      "ruby": [
        [
          "正",
          "せい"
        ],
        [
          "弦",
          "げん"
        ],
        [
          "波",
          "は"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "seigenha",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "せいげんは"
      },
      "expansion": "正(せい)弦(げん)波(は) • (seigenha)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [
            "Terms with redundant sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Signal processing",
          "orig": "ja:Signal processing",
          "parents": [
            "Applied mathematics",
            "Telecommunications",
            "Mathematics",
            "Communication",
            "Technology",
            "Formal sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ja",
          "name": "Trigonometry",
          "orig": "ja:Trigonometry",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "sine wave"
      ],
      "id": "en-正弦波-ja-noun-rLuZkzSD",
      "links": [
        [
          "trigonometry",
          "trigonometry"
        ],
        [
          "sine wave",
          "sine wave"
        ]
      ],
      "raw_glosses": [
        "(trigonometry, signal processing) sine wave"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences",
        "signal-processing",
        "trigonometry"
      ]
    }
  ],
  "word": "正弦波"
}

{
  "forms": [
    {
      "form": "正弦波",
      "ruby": [
        [
          "正",
          "せい"
        ],
        [
          "弦",
          "げん"
        ],
        [
          "波",
          "は"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "seigenha",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "せいげんは"
      },
      "expansion": "正(せい)弦(げん)波(は) • (seigenha)",
      "name": "ja-noun"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant wikilinks",
        "Japanese nouns",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with secondary school kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Japanese terms written with three Han script characters",
        "ja:Signal processing",
        "ja:Trigonometry"
      ],
      "glosses": [
        "sine wave"
      ],
      "links": [
        [
          "trigonometry",
          "trigonometry"
        ],
        [
          "sine wave",
          "sine wave"
        ]
      ],
      "raw_glosses": [
        "(trigonometry, signal processing) sine wave"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences",
        "signal-processing",
        "trigonometry"
      ]
    }
  ],
  "word": "正弦波"
}

{
  "called_from": "parser/1336",
  "msg": "no corresponding start tag found for </span>",
  "path": [
    "正弦波"
  ],
  "section": "Japanese",
  "subsection": "noun",
  "title": "正弦波",
  "trace": ""
}