But the country has historically avoided the periodic upheavals that have convulsed regional states like Iraq and Syria.
The periodic agony that accompanies sickle cell was joined by the torment of persistent eye infections and repeated surgeries.
The crowd at First was relatively calm, appeased, in part, by periodic, spontaneous outbursts of the Star-Spangled Banner.
They calculated that every periodic inspection would cost each carrier $1,275 per airplane.
And even now that ISIS has retreated from the area, it is still subject to periodic attacks from the Assad regime.
If the density be inversely as the distances, the periodic times will be equal.
The periodic time of the earth is 365 days, omitting the quarter day.
William's bugle had just returned to public life after one of its periodic terms of retirement into his father's keeping.
But what was his surprise to observe that these alterations were not of an annually periodic character.
The summer was passed in New York, and luckily, except for periodic waves of tropical heat, the weather was not unendurable.
1640s, from French périodique (14c.), from Latin periodicus, from periodus (see period).
Periodic table in chemistry (1889) is from notion of the arrangement, in which similar properties recur at intervals in elements in the same area as you read down the rows of the table. This sense of the word is attested from 1872 (periodic law).
periodic pe·ri·od·ic (pĭr'ē-ŏd'ĭk)
Having or marked by repeated cycles.
Recurring at regular intervals.