"cymatograph" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "κῦμα"
      },
      "expansion": "Ancient Greek κῦμα (kûma)",
      "name": "uder"
    },
    {
      "args": {
        "1": "en",
        "2": "",
        "3": "graph"
      },
      "expansion": "+ -graph",
      "name": "suffix"
    }
  ],
  "etymology_text": "κῡμᾰτ- (kūmat-) (kūmat-, the long stem of the Ancient Greek κῦμα (kûma), kūma, “wave”, whence cyma) + -graph; compare cymograph",
  "forms": [
    {
      "form": "cymatographs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cymatograph (plural cymatographs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -graph",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1885, Nature, XXXII, page 279",
          "text": "Prof. S. P. Thompson…had also lent for exhibition…a “cymatograph” (an instrument for compounding the resultant of two parallel, simple, harmonic waves).",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An instrument for compounding the resultant of two parallel, simple, harmonic waves."
      ],
      "id": "en-cymatograph-en-noun-IfzYB6M6",
      "links": [
        [
          "instrument",
          "instrument#English"
        ],
        [
          "compounding",
          "compound#English"
        ],
        [
          "resultant",
          "resultant#English"
        ],
        [
          "parallel",
          "parallel#English"
        ],
        [
          "simple",
          "simple#English"
        ],
        [
          "harmonic",
          "harmonic#English"
        ],
        [
          "waves",
          "wave#English"
        ]
      ],
      "raw_glosses": [
        "(obsolete, rare) An instrument for compounding the resultant of two parallel, simple, harmonic waves."
      ],
      "tags": [
        "obsolete",
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/saɪˈmætəʊɡɹɑːf/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/saɪˈmætəʊɡɹæf/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "enpr": "sīmăʹtōgräf",
      "tags": [
        "Received-Pronunciation"
      ]
    }
  ],
  "word": "cymatograph"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "κῦμα"
      },
      "expansion": "Ancient Greek κῦμα (kûma)",
      "name": "uder"
    },
    {
      "args": {
        "1": "en",
        "2": "",
        "3": "graph"
      },
      "expansion": "+ -graph",
      "name": "suffix"
    }
  ],
  "etymology_text": "κῡμᾰτ- (kūmat-) (kūmat-, the long stem of the Ancient Greek κῦμα (kûma), kūma, “wave”, whence cyma) + -graph; compare cymograph",
  "forms": [
    {
      "form": "cymatographs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cymatograph (plural cymatographs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English 4-syllable words",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms derived from Ancient Greek",
        "English terms suffixed with -graph",
        "English terms with IPA pronunciation",
        "English terms with obsolete senses",
        "English terms with quotations",
        "English terms with rare senses",
        "English undefined derivations"
      ],
      "examples": [
        {
          "ref": "1885, Nature, XXXII, page 279",
          "text": "Prof. S. P. Thompson…had also lent for exhibition…a “cymatograph” (an instrument for compounding the resultant of two parallel, simple, harmonic waves).",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An instrument for compounding the resultant of two parallel, simple, harmonic waves."
      ],
      "links": [
        [
          "instrument",
          "instrument#English"
        ],
        [
          "compounding",
          "compound#English"
        ],
        [
          "resultant",
          "resultant#English"
        ],
        [
          "parallel",
          "parallel#English"
        ],
        [
          "simple",
          "simple#English"
        ],
        [
          "harmonic",
          "harmonic#English"
        ],
        [
          "waves",
          "wave#English"
        ]
      ],
      "raw_glosses": [
        "(obsolete, rare) An instrument for compounding the resultant of two parallel, simple, harmonic waves."
      ],
      "tags": [
        "obsolete",
        "rare"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/saɪˈmætəʊɡɹɑːf/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "ipa": "/saɪˈmætəʊɡɹæf/",
      "tags": [
        "Received-Pronunciation"
      ]
    },
    {
      "enpr": "sīmăʹtōgräf",
      "tags": [
        "Received-Pronunciation"
      ]
    }
  ],
  "word": "cymatograph"
}