(n.) The quality being regularly recurrent; as, the periodicity of the seasons\.

Indian file alternation annual period array articulation bank baseball season basketball season beat buzz catena catenation chain chain reaction chaining cold season concatenation concert season connection consecution continuum course cycle cyclicalness descent drone dry season endless belt endless round file filiation fluctuation football season frequency frequency band frequency spectrum gamut gradation harmonic motion hum intermittence intermittency libration line lineage meter monotone nexus nutation off season oscillation pendulation pendulum pendulum motion period periodicalness piston motion plenum powder train progression pulsation queue rainy season range rank reappearance recurrence regular wave motion reoccurrence resonance resonance frequency reticulation return rhythm rotation round routine row run scale season seasonableness seasonality sequence series single file social season spectrum string succession swath the season thread tier time of year train undulation vacillation vibrancy vibratility vibration wavering windrow