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Periodical   /pˌɪriˈɑdɪkəl/   Listen
noun
Periodical  n.  A magazine or other publication which appears at stated or regular intervals.


adjective
Periodical, Periodic  adj.  
1.
Of or pertaining to a period or periods, or to division by periods. "The periodical times of all the satellites."
2.
Performed in a period, or regular revolution; proceeding in a series of successive circuits; as, the periodical motion of the planets round the sun.
3.
Happening, by revolution, at a stated time; returning regularly, after a certain period of time. "The periodic return of a plant's flowering." "To influence opinion through the periodical press."
4.
Acting, happening, or appearing, at fixed or somewhat variable intervals; recurring; as, periodical epidemics
5.
(Rhet.) Of or pertaining to a period; constituting a complete sentence.
Periodic comet (Astron.), a comet that moves about the sun in an elliptic orbit; a comet that has been seen at two of its approaches to the sun.
Periodic function (Math.), a function whose values recur at fixed intervals as the variable uniformly increases. The trigonomertic functions, as sin(x), tan(x), etc., are periodic functions. Exponential functions are also periodic, having an imaginary period, and the elliptic functions have not only a real but an imaginary period, and are hence called doubly periodic.
Periodic law (Chem.), the generalization that the properties of the chemical elements are periodic functions of their atomic weights. "In other words, if the elements are grouped in the order of their atomic weights, it will be found that nearly the same properties recur periodically throughout the entire series." The following tabular arrangement of the atomic weights shows the regular recurrence of groups (under I., II., III., IV., etc.), each consisting of members of the same natural family. The gaps in the table indicate the probable existence of unknown elements.
Periodic table, Periodic table of the elements (Chem.), A tabular arrangement of the chemical elements, illustrating the periodic law, described above.
Periodic star (Astron.), a variable star whose changes of brightness recur at fixed periods.
Periodic time of a heavenly body (Astron.), the time of a complete revolution of the body about the sun, or of a satellite about its primary.





Collaborative International Dictionary of English 0.48


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"Periodical" Quotes from Famous Books



... that, even if he were sentenced to death, he could not die,—that some power, of which, however, he had only a vague notion, would rescue him,—that the compact, which gave him renewed youth and a long life on the fatal condition of his periodical transformation into a horrid monster, must be fulfilled; and, though he saw not—understood not how all this was to be, still he knew that it would happen if he ...
— Wagner, the Wehr-Wolf • George W. M. Reynolds
... reading matter than any other juvenile publication, and is the CHEAPEST and the BEST Periodical of the kind ...
— The Angel Children - or, Stories from Cloud-Land • Charlotte M. Higgins
... political satires, signed with a 'J' in the corner of each page opposite to the cartoon, that conferred on Punch a wholesome influence in politics. Mr. Albert Smith made his debut in this wise:—At the birth of Punch had just died a periodical called (I think) the Cosmorama. When moribund, Mr. Henry Mayhew was called in to resuscitate it. This periodical bequeathed a comic census-paper filled up, in the character of a showman, so cleverly that the author was eagerly sought at the starting ...
— Old and New London - Volume I • Walter Thornbury
... sometimes priests are puzzled about the truth and accuracy of the incidents recorded in those lessons of the second nocturn. They should be treated with reverence. The ignorant flippancy of a priest in an article (in a very secular periodical) on St. Expeditus gave great pain to Catholics and gave material for years to ...
— The Divine Office • Rev. E. J. Quigley
... fortunate person to have his name mentioned in the Staats-Courant, the Government gazette, but hardly any attention was paid to the search for heroes, and only the names of a few men were even chronicled in the columns of that periodical. One of the bravest men in the Natal campaign was a young Pretoria burgher named Van Gas, who, in his youth, had an accident which made it necessary that his right arm should be amputated at the elbow. Later in life he was ...
— With the Boer Forces • Howard C. Hillegas


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