planetarium

n (pl ~s or -ia / -IE; -IE/) (building with a) device for representingthe positions and movements of the planets and stars by projecting spots of light on a dome which represents the sky 天象仪; 天象馆; 天文馆.

plain flour, plain-clothes man, plain-spoken, plainchant, plainly, plainness, plains, plainsman, plaint, plaintiff, plaintive, plaintively, plaintiveness, plait, plan, plane, plane geometry, plane sailing, plane-table, planet, planetary, plangency, plangent, plangently, plank, planking, plankton, planned, planning, plant, plantain, plantation, planter, plaque, plasma, plaster, plaster cast, plasterboard, plastered, plasterer,