- 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
Examples from the Web for periodically
Time passed, and periodically a scholarly blog would raise a metaphorical eyebrow about the lack of test results.The ‘Gospel of Jesus’s Wife’ is Still as Big a Mystery as Ever|Candida Moss|April 13, 2014|DAILY BEAST
Nor one of those tropical torments that periodically lash the country.
Some periodically cross the border back into Syria to check in on businesses and collect incomes.How Palestinian Refugees from Syria are Forced to Compete in Lebanon and Jordan|Matt Surrusco|November 6, 2013|DAILY BEAST
Second funniest, midwife asked me to rate my pain 1-10 periodically and at one point I said 9.Penis Beakers and Constipated Dolls: What Mothers REALLY Want To Know|Tom Sykes|October 11, 2013|DAILY BEAST
“They were together for about a year, and then after that year, periodically from time to time,” Herman said.‘I Always Felt It Was Creepy’: Stories of Sex With Elmo Puppeteer Kevin Clash|Maria Elena Fernandez|December 6, 2012|DAILY BEAST
There are dates that seem to be periodically repeated with marked significance.Victor Hugo: His Life and Works|G. Barnett Smith
Society must be periodically reduced to its elements, in order to redress grievances.The Crater|James Fenimore Cooper
Wage rates to be periodically revised to correspond with variations in the cost of living.
There are not a few such families where the father is periodically in the hands of the law and yet not in permanent restraint.Being Well-Born|Michael F. Guyer
Periodically and for a price, a man comes and fills the oil tank.If You're Going to Live in the Country|Thomas H. Ormsbee and Richmond Huntley
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).