0 in a way that is repeated after a particular period of time:
1 repeatedly at regular times:
The masker had amply padded his derriere and bust, and when he performed he periodically punctuated his slow dance movements with exaggerated hip thrusts.
However, the corresponding wake plasma oscillations periodically accelerate the downstream plasma electrons to relativistic energies.
The issue of political interference in the police arose early on in his presidency, and has surfaced periodically ever since.
The hotel's water supply was monitored daily for residual chlorine and faecal coliforms, and samples were collected periodically for bacterial and viral testing.
It was caused by a hydrodynamic source periodically varying its strength.
This pressure periodically provoked crises as the exchange reserves were depleted, necessitating short-term constraints on domestic economic policy.
Periodically, the modifications on the raw side are transferred to the reasoning side.
His flow was anisotropic in the form of steady periodically arranged two-dimensional rolls.