durations, lifetimes, periods, processes, intervals, photoperiod, oscillations, iterations, phases, patterns, cyclicity, times, perturbations, periodicity, variability, downturns, equilibriums, fluctuations, increments, lifespan, kurtosis, migrations, stochasticity, periodicities, dephasing, sine curve, troughs, nanosecond, shifts, estrous cycle, oestrus, seasonality, nonvolatile storage, picosecond, diapause, microampere, exponential decay, hydrologic cycle, onsets, estrous, transitions, estrus, timespan, msec, nrem sleep, discontinuities, windings, milliseconds, extremes, millivolts, impedances, nrem, loops, amplitudes, diurnal variation, turn indicator, dilations, delocalization, mileages, polyploidy, segments, paradigms, hysteresis, interconversion, vagaries, intensities, equilibration, patters, equinoxes, trajectories, successions, sinusoid, samsara, oscillators, fortnights, sigma, alphas, luteal phase, sols, blips, spermatogenesis, homologous chromosomes, gastrulation, hiatuses, terawatt, millennia, phototransistor, fluxes, asynchrony, derate, dynamics, span, aprils, regression, initialisation, autoregulation, days, trends, magnon, ranges, stochastic, backcross, cycle, bouts, rounds, remissions, runs, sessions, trips, entries, episodes, firings, lags, occurrences, paragraphs, renewals, traumas, announcements, batches

., ac, cycle, cyclic, cyclical, diestrous, diestrual, diestrum, diestrus, dioestrous, dioestrual, east turkestan islamic movement, east turkistan islamic movement, fixed-cycle operation, frequency, lunar calendar, lunisolar calendar, noncyclic, oswald spengler, solar calendar, spengler, ununderstood, wavelength