spectral width

in NMR
symbol: $f_{\rm{SW}}$
https://doi.org/10.1351/goldbook.08417
Frequency range that describes the width of the spectrum window of a specific nucleus in nuclear magnetic resonance spectroscopy.
Source:
PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 705 (https://doi.org/10.1515/pac-2019-0203)