Bead of frozen deuterium, which is injected as solid matter into a tokamak plasma for refueling
a granule of a preformed moulding material having relatively uniform dimensions in a given lot, used as a feedstock in moulding and extrusion operations
{i} small ball; bullet, small lead shot; pill, tablet (of medication); solid phase gathering on the bottom of vial
Usually a small, compressed, symmetrical and hard chunk of matter. Ex: Wood pellet, ore pellet, etc