perestroika

n [U] (Russian俄) (formaly) restructuring of the Soviet economic and political system （旧时）（苏联经济与政治体制的）改革.

perceptual, perch, perchance, percipience, percipient, percolate, percolation, percolator, percussion, percussion cap (also cap), percussion instrument, percussionist, perdition, peregrination, peregrine, peremptorily, peremptory, peremptory writ, perennial, perennially, perfect, perfect pitch (also absolute pitch), perfectibility, perfectible, perfection, perfectionism, perfectionist, perfectly, prefer sb to do sth., perfervid, perfidious, perfidiously, perfidiousness, perfidy, perforate, perforating, perforation, perforce, perform, performance,