Sym-

{
  "id": "MLC-T-CHM-011721",
  "term": "Sym-",
  "field": "Chemistry",
  "definition": "A prefix used in chemical nomenclature, particularly for substituted benzene derivatives, to indicate a symmetrical arrangement of substituents around the ring. For example, in 1,3,5-trichlorobenzene, the three chlorine atoms are symmetrically positioned. This prefix is also used for other symmetrical structures, such as in 'sym-tetrachloroethane'.",
  "subject": "Organic and Biomolecular Chemistry",
  "references": [
    "Blue Book, p. 465 (https://www.acdlabs.com/iupac/nomenclature/)",
    "Red Book, 3rd ed., p. 245"
  ],
  "url": "https://mlchart.com/terminology/chemistry/sym/"
}