Catena-

{
  "id": "MLC-T-CHM-001736",
  "term": "Catena-",
  "field": "Chemistry",
  "definition": "A descriptor used in inorganic and coordination chemistry nomenclature to indicate a linear chain structure formed by repeating structural units linked end to end. The term is prefixed to the name of the repeating unit to describe polymeric substances. For example, catena-poly(sulfur) denotes a polymer consisting of a simple chain of sulfur atoms.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "macromolecule"
  ],
  "references": [
    "Blue Book, p. 464 (https://www.acdlabs.com/iupac/nomenclature/)",
    "Red Book, 3rd ed., p. 245"
  ],
  "url": "https://mlchart.com/terminology/chemistry/catena/"
}