From hydro- + magnesium.
hydromagnesium (uncountable)
- (chemistry, in combination) The univalent radical HMg-
- 2013 Carlos Cabezas et al, "Laboratory and Astronomical Discovery of HydroMagnesium Isocyanide" arXiv
- We report on the detection of hydromagnesium isocyanide, HMgNC, in the laboratory and in the carbon rich evolved star IRC+10216.