percolation

n [C, U].

perambulation, perambulator, perceivable, perceive, percent, percentage, percentile, perceptibility, perceptible, perceptibly, perception, perceptive, perceptively, perceptiveness, perceptivity, perceptual, perch, perchance, percipience, percipient, percolate, percolator, percussion, percussion cap (also cap), percussion instrument, percussionist, perdition, peregrination, peregrine, peremptorily, peremptory, peremptory writ, perennial, perennially, perestroika, perfect, perfect pitch (also absolute pitch), perfectibility, perfectible, perfection, perfectionism,