Terms sourced from: http://iupac.org/publications/pac/73/11/1795/

"NMR nomenclature. Nuclear spin properties and conventions for chemical shifts(IUPAC Recommendations 2001)", Harris, R.K.;Becker, E.D.;Cabral De Menezes, S.M.;Goodfellow, R.;Granger, P., Pure and Applied Chemistry 2001, 73(11), 1795