"tetracycle" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "τετράκυκλος",
        "t": "four-wheeled"
      },
      "expansion": "Ancient Greek τετράκυκλος (tetrákuklos, “four-wheeled”)",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "tetra",
        "3": "cycle"
      },
      "expansion": "tetra- + cycle",
      "name": "prefix"
    }
  ],
  "etymology_text": "From Ancient Greek τετράκυκλος (tetrákuklos, “four-wheeled”), equivalent to tetra- + cycle.",
  "forms": [
    {
      "form": "tetracycles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tetracycle (plural tetracycles)",
      "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 prefixed with tetra-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Four",
          "orig": "en:Four",
          "parents": [
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organic compounds",
          "orig": "en:Organic compounds",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Any organic compound, containing four rings, related to tetracycline"
      ],
      "id": "en-tetracycle-en-noun-YO8-HFg~",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "organic compound",
          "organic compound"
        ],
        [
          "ring",
          "ring"
        ],
        [
          "tetracycline",
          "tetracycline"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Any organic compound, containing four rings, related to tetracycline"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "word": "tetracycle"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "τετράκυκλος",
        "t": "four-wheeled"
      },
      "expansion": "Ancient Greek τετράκυκλος (tetrákuklos, “four-wheeled”)",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "tetra",
        "3": "cycle"
      },
      "expansion": "tetra- + cycle",
      "name": "prefix"
    }
  ],
  "etymology_text": "From Ancient Greek τετράκυκλος (tetrákuklos, “four-wheeled”), equivalent to tetra- + cycle.",
  "forms": [
    {
      "form": "tetracycles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tetracycle (plural tetracycles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms derived from Ancient Greek",
        "English terms prefixed with tetra-",
        "en:Four",
        "en:Organic compounds"
      ],
      "glosses": [
        "Any organic compound, containing four rings, related to tetracycline"
      ],
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "organic compound",
          "organic compound"
        ],
        [
          "ring",
          "ring"
        ],
        [
          "tetracycline",
          "tetracycline"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Any organic compound, containing four rings, related to tetracycline"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "word": "tetracycle"
}