- characterized by a series of successive circuits or revolutions, as the motion of a planet or satellite.
- of or relating to a period, as of the revolution of a heavenly body.
- period drama,
- period of revolution,
- period piece,
- period-luminosity relation,
- periodic acid,
- periodic acid-schiff,
- periodic attractor,
- periodic decimal,
- periodic disease
Origin of periodic1
Origin of periodic2
Examples from the Web for periodic
The periodic agony that accompanies sickle cell was joined by the torment of persistent eye infections and repeated surgeries.
And even now that ISIS has retreated from the area, it is still subject to periodic attacks from the Assad regime.Millions of Refugees from Syria’s War Are Clinging to Life In Toxic Conditions|Christopher Looney|April 14, 2014|DAILY BEAST
And when you review the periodic table, take special note of Tungsten, or Wolfram.
Conditioning the Fed to react less to periodic market tantrums will take a strong will.Janet Yellen Succeeds in the Senate Without Really Trying|Daniel Gross|November 14, 2013|DAILY BEAST
There were periodic beatings where the guards would enter with canes.A Syrian Soldier on Being Arrested for Refusing to Shoot Civilians|Andrew Slater|September 5, 2013|DAILY BEAST
The parties which in turn wield power in these periodic revolutions may be briefly termed classical and romantic.Morals and the Evolution of Man|Max Simon Nordau
Lloyd Morgan has prettily likened the vital processes to the periodic formation and discharge of explosive substances.On Germinal Selection as a Source of Definite Variation|August Weismann
The periodic ratio of development of new fronds may be, perhaps, roughly estimated at six in the course of a year.Omphalos|Philip Henry Gosse
Now all this time the periodic celebrations, the games, and lamentations, and songs would be assuming a more solemn character.Early Bardic Literature, Ireland|Standish O'Grady
The periodic festival begets a kind of not immortal, but perennial, god.Ancient Art and Ritual|Jane Ellen Harrison
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).