periodical

• POS: Adjective, Noun
• HYPHEN: pe=ri=od=i=cal

CIDE DICTIONARY

periodical, a. [L. periodicus, Gr. : cf. F. périodique.].

•  Of or pertaining to a period or periods, or to division by periods.  [1913 Webster]

  "The periodicaltimes of all the satellites."  [1913 Webster]
•  Performed in a period, or regular revolution; proceeding in a series of successive circuits; as, the periodical motion of the planets round the sun.  [1913 Webster]
•  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.  [1913 Webster]

  "The periodic return of a plant's flowering."  [1913 Webster]

  "To influence opinion through the periodical press."  [1913 Webster]
•  Of or pertaining to a period; constituting a complete sentence.  [1913 Webster]

  " 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."  [1913 Webster]

periodical, n. 

 A magazine or other publication which appears at stated or regular intervals.  [1913 Webster]

OXFORD DICTIONARY

periodical, n. & adj.
--n. a newspaper, magazine, etc. issued at regular intervals, usu. monthly or weekly.
--adj.
1 published at regular intervals.
2 periodic, occasional.

Derivative

periodically adv.

THESAURUS

periodical

airing, almanac, alternate, annual, bandying, bimonthly, biweekly, book, broadcast, broadcasting, bruiting, bruiting about, circulation, daily, daybook, diary, diffusion, display, dissemination, ephemeris, evulgation, fortnightly, gazette, hebdomadal, isochronal, issuance, issue, journal, magazine, monthly, newsletter, newsmagazine, newspaper, organ, paper, pictorial, printing, promulgation, propagation, publication, publishing, quarterly, recurring, renew, review, serial, slick magazine, spread, spreading, spreading abroad, telecasting, trade magazine, ventilation, weekly, yearbook

ROGET THESAURUS

periodical

Book

N booklet, writing, work, volume, tome, opuscule, tract, tractate, livret, brochure, libretto, handbook, codex, manual, pamphlet, enchiridion, circular, publication, chap book, part, issue, number livraison, album, portfolio, periodical, serial, magazine, ephemeris, annual, journal, paper, bill, sheet, broadsheet, leaf, leaflet, fly leaf, page, quire, ream, chapter, section, head, article, paragraph, passage, clause, endpapers, frontispiece, cover, binding, folio, quarto, octavo, duodecimo, sextodecimo, octodecimo, encyclopedia, encompilation, library, bibliotheca, press, definitive work, treatise, comprehensive treatise (dissertation), writer, author, litterateur, essayist, journalism, pen, scribbler, the scribbling race, literary hack, Grub-street writer, writer for the press, gentleman of the press, representative of the press, adjective jerker, diaskeaust, ghost, hack writer, ink slinger, publicist, reporter, penny a liner, editor, subeditor, playwright, poet, bookseller, publisher, bibliopole, bibliopolist, librarian, bookstore, bookshop, bookseller's shop, knowledge of books, bibliography, book learning, among the giant fossils of my past, craignez tout d'un auteur en courroux, for authors nobler palms remain, I lived to write and wrote to live, look in thy heart and write, there is no Past so long as Books shall live, the public mind is the creation of the Master-Writ, volumes that I prize above my dukedom.

Periodicity

N regularity of recurrence, periodicity, intermittence, beat, oscillation, pulse, pulsation, rhythm, alternation, alternateness, alternativeness, alternity, bout, round, revolution, rotation, turn, say, anniversary, jubilee, centenary, catamenia, courses, menses, menstrual flux, rota, cycle, period, stated time, routine, days of the week, Sunday, Monday, months of the year, January, feast, fast, Christmas, Easter, New Year's day, Allhallows, Allhallowmas, All Saints' Day, All Souls', All Souls' Day, Ash Wednesday, bicentennial, birthday, bissextile, Candlemas, Dewali, groundhog day, Halloween, Hallowmas, Lady day, leap year, Midsummer day, Muharram, woodchuck day, St. Swithin's day, natal day, yearbook, yuletide, punctuality, regularity, steadiness, periodic, periodical, serial, recurrent, cyclical, rhythmical, recurring, intermittent, remittent, alternate, every other, hourly, diurnal, daily, quotidian, tertian, weekly, hebdomadal, hebdomadary, biweekly, fortnightly, bimonthly, catamenial, monthly, menstrual, yearly, annual, biennial, triennial, centennial, secular, paschal, lenten, regular, steady, punctual, regular as clockwork, periodically, at regular intervals, at stated times, at fixed established, at established periods, punctually, de die in diem, from day to day, day by day, by turns, in turn, in rotation, alternately, every other day, off and on, ride and tie, round and round.