peak width at half height

symbol: $w_{\rm{h}}$
https://doi.org/10.1351/goldbook.09904
Peak width at \(\pu{50\%}\) of the peak height that terminates at the intersections with the peak.
Notes:
  1. The peak width at half height must never be called the "half width" because that has a completely different meaning.
  2. The peak width at half height of a Gaussian peak is about 2.355 times the standard deviation of the modelled Gaussian. See figure in peak height.
Source:
PAC, 2017, 90, 181. 'Terminology of separation methods (IUPAC Recommendations 2017)' on page 195 (https://doi.org/10.1515/pac-2017-0111)