Spiro union

{
  "id": "MLC-T-CHM-011232",
  "term": "Spiro union",
  "field": "Chemistry",
  "definition": "The structural feature in a spiro compound where two rings share only one common atom. This shared atom, known as the spiro atom, is the sole point of connection between the two ring systems. The rings are typically oriented in planes that are approximately orthogonal to each other.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "Blue Book, p. 37 (https://www.acdlabs.com/iupac/nomenclature/)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/spiro-union/"
}