syn

https://doi.org/10.1351/goldbook.S06216
  1. See: torsion angle
  2. See: endo, exo, syn, anti
  3. See: anti
  4. Formerly used to describe the stereochemistry of oximes and related systems.
    See: E, Z
Source:
PAC, 1996, 68, 2193. 'Basic terminology of stereochemistry (IUPAC Recommendations 1996)' on page 2220 (https://doi.org/10.1351/pac199668122193)