The sections in this article are 1 Introduction 2 The Deuterium Quadrupolar Interaction and the Nuclear Spin Hamiltonian 3 Deuterium Powder Lineshapes: Static and Motionally Averaged 4 Anisotropic Deuterium Relaxation 5 Deuterium Spin Alignment and 2D Exchange Spectroscopy—The Study of Ultraslow Motions in Deuterated Solids 6 Other Deuterium NMR Experiments in the Solid State 7 Biographical Sketch Related Articles