"presystole" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "systole"
      },
      "expansion": "pre- + systole",
      "name": "prefix"
    }
  ],
  "etymology_text": "pre- + systole",
  "forms": [
    {
      "form": "presystoles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "presystole (plural presystoles)",
      "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 pre-",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "cardiac contraction that follows the diastole and precedes the systole"
      ],
      "id": "en-presystole-en-noun-MY9wJNeb",
      "links": [
        [
          "cardiac",
          "cardiac"
        ],
        [
          "contraction",
          "contraction"
        ],
        [
          "diastole",
          "diastole"
        ],
        [
          "systole",
          "systole"
        ]
      ],
      "related": [
        {
          "word": "presystolic"
        }
      ],
      "translations": [
        {
          "code": "el",
          "lang": "Greek",
          "roman": "prosystolí",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "προσυστολή"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "Translations",
          "word": "presistole"
        }
      ]
    }
  ],
  "word": "presystole"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "systole"
      },
      "expansion": "pre- + systole",
      "name": "prefix"
    }
  ],
  "etymology_text": "pre- + systole",
  "forms": [
    {
      "form": "presystoles",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "presystole (plural presystoles)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "presystolic"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with pre-",
        "Translation table header lacks gloss"
      ],
      "glosses": [
        "cardiac contraction that follows the diastole and precedes the systole"
      ],
      "links": [
        [
          "cardiac",
          "cardiac"
        ],
        [
          "contraction",
          "contraction"
        ],
        [
          "diastole",
          "diastole"
        ],
        [
          "systole",
          "systole"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "el",
      "lang": "Greek",
      "roman": "prosystolí",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "προσυστολή"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "Translations",
      "word": "presistole"
    }
  ],
  "word": "presystole"
}