Helicity

{
  "id": "MLC-T-CHM-005161",
  "term": "Helicity",
  "field": "Chemistry",
  "definition": "The sense of twist or handedness of a helical structure, such as a screw, a spring, or a molecular helix. It describes whether the helix turns clockwise (right-handed or P for plus) or counter-clockwise (left-handed or M for minus) when viewed along its axis. This property is a type of axial chirality.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "axial chirality",
    "chirality",
    "chirality sense",
    "helix",
    "torsion angle",
    "Δ, Λ"
  ],
  "references": [
    "PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2209 (https://doi.org/10.1351/pac199668122193)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/helicity/"
}