Crossword clues for periodical
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Periodic \Pe`ri*od"ic\, Periodical \Pe`ri*od"ic*al\, a. [L. periodicus, Gr. ?: cf. F. p['e]riodique.]
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Of or pertaining to a period or periods, or to division by periods.
The periodicaltimes of all the satellites.
--Sir J. Herschel. Performed in a period, or regular revolution; proceeding in a series of successive circuits; as, the periodical motion of the planets round the sun.
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Happening, by revolution, at a stated time; returning regularly, after a certain period of time; acting, happening, or appearing, at fixed intervals; recurring; as, periodical epidemics.
The periodic return of a plant's flowering.
--Henslow.To influence opinion through the periodical press.
--Courthope. -
(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 wieghts. ``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. [1913 Webster] TABLE OF THE PERIODIC LAW OF THE CHEMICAL ELEMENTS (The vertical columns contain the periodic groups) Series1[ 2[ 3[ 4[ 5[ 6[ 7[ 8[ 9[ 10[ 11[ 12[
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----- |I. II. III. IV. V. VI. VII. VIII. | RH4 RH3 RH3 RH |R2O RO R3O3 RO2 R2O5 RO3 R2O7 RO4
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----- H 1 [1913 Webster] Li 7 [1913 Webster] Na 23 [1913 Webster] K 39 [1913 Webster] (Cu) 63 [1913 Webster] Rb 8 -
2 [1913 Webster] (Ag) (108) [1913 Webster] Cs 133 [1913 Webster] (-) [1913 Webster] (-) [1913 Webster] (Au) (197) [1913 Webster] (-)
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---Note: A similar relation had been enunciated in a crude way by Newlands; but the law in its effective form was developed and elaborated by Mendelejeff, whence it is sometimes called Mendelejeff's law. Important extensions of it were also made by L. Meyer. By this means Mendelejeff predicted with remarkable accuracy the hypothetical elements ekaboron, ekaluminium, and ekasilicon, afterwards discovered and named respectively scandium, gallium, and germanium.
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.
Periodical \Pe`ri*od"ic*al\, n. A magazine or other publication which appears at stated or regular intervals.
Douglas Harper's Etymology Dictionary
Wiktionary
a. periodic. n. 1 A publication issued regularly, but less frequently than daily. 2 A publication that appears at fixed intervals. 3 A publication that often contains the most current information in the field, on every conceivable topic, often in greater detail than other publication formats. 4 The primary means for communication of original scholarship or creative work at the cutting edge of research in almost all fields.
WordNet
n. a publication that appears at fixed intervals
Usage examples of "periodical".
Piles of books, periodicals, offprints, Xeroxed sheets of stapled or loose paper, folded or rolled graphs and charts and tables and spreadsheets.
The cake of rice and honey borne in the dead hand for Cerberus, the periodical offerings to the ghosts of the departed, as at the festivals called Feralia and Parentalia,41 the pictures of the scenery of the under world, hung in the temples, of which there was a famous one by Polygnotus,42 all imply a literal crediting of the vulgar doctrine.
Permaculture One or the periodical, The International Permaculture Species Yearbook and the Friends of the Trees Society publication, International Green Front Report, of possible tree species that would fit well in the Watershed.
With the higher vertebrates it is periodical, or is resorted to for the satisfaction of a given want-- propagation of the species, migration, hunting, or mutual defence.
Periodicals sadly mortgaged the claims that Hazlitt, and many others of his contemporaries, had upon a vast reversionary estate of Fame.
She is sitting on the floor, surrounded by his periodicals, reading the notes he has scribbled into several canary-yellow legal tablets.
The River Lycus, formed by the conflux of two little streams, pours into the harbor a perpetual supply of fresh water, which serves to cleanse the bottom, and to invite the periodical shoals of fish to seek their retreat in that convenient recess.
Where there are periodical razzias the sacredness of human life is unknown, and the Shereef has been, besides, many years in the camp of Abd-el-Kader, where a good deal of sanguinary work was carried on.
The committee have reason to believe that a general wish pervades the community at large that some such facility as the proposed measure should be granted by express law, for subscribing, through the agency of the Post-office Department, to newspapers and periodicals which diffuse daily, weekly, or monthly intelligence of passing events.
So far, then, as I am acquainted with the general character of the cases reported by the Homoeopathic physicians, they would for the most part be considered as wholly undeserving a place in any English, French, or American periodical of high standing, if, instead of favoring the doctrine they were intended to support, they were brought forward to prove the efficacy of any common remedy administered by any common practitioner.
The Royal College of Physicians was the more peculiar object of the attack, but with this body, the editors of some of the leading periodicals, and several physicians distinguished at that time, and even now remembered for their services to science and humanity, were involved in unsparing denunciations.
Their assertions of the vast benefits conferred upon the human race by experiments upon living animals are made in the journals of the day, in popular magazines--in periodicals which refuse opportunity of rejoinder, and which therefore lend their influence to securing the permanency of untruth.
Miss Arabella, her stitchery lying neglected on the table before, sat Miss Sophia, reading aloud from another volume of this instructive periodical.
When a new Ray Bradbury book appears it gets serious attention from the newspapers and periodicals that count.
Of course, menstruation before the third or fourth year is extremely rare, most of the cases reported before this age being merely accidental sanguineous discharges from the genitals, not regularly periodical, and not true catamenia.