pulsed nuclear magnetic resonance spectroscopy four-dimensional nuclear magnetic resonance spectroscopy 4D-NMR 2009-06-30T10:00:27Z 4D NMR Any type of nuclear magnetic resonance spectroscopy in which four independent frequency dimensions are employed for the correlation and dispersal of signals (by employing three magnetisation transfer steps). Each signal is described by four frequencies, thus effecting the distribution of signals within an axis of cubes. CHMO:0002055 https://orcid.org/0000-0001-5985-7429 four-dimensional NMR