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1. WordNet® 3.0 (2006) |
periodic
adj 1: happening or recurring at regular intervals; "the
periodic appearance of the seventeen-year locust" [syn:
periodic, periodical] [ant: aperiodic,
nonperiodic]
2: recurring or reappearing from time to time; "periodic
feelings of anxiety" [syn: periodic, occasional]
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2. The Collaborative International Dictionary of English v.0.48 |
Periodic \Per`i*od"ic\ (p[~e]r`[-i]*[o^]d"[i^]k), a. [Pref. per-
+ iodic.] (Chem.)
Pertaining to, derived from, or designating, the highest
oxygen acid (HIO4) of iodine.
[1913 Webster] Periodic
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3. The Collaborative International Dictionary of English v.0.48 |
Periodic \Pe`ri*od"ic\ (p[=e]`r[i^]*[o^]d"[i^]k), Periodical
\Pe`ri*od"ic*al\ (p[=e]`r[i^]*[o^]d"[i^]*kal), a. [L.
periodicus, Gr. periodiko`s: cf. F. p['e]riodique.]
1. Of or pertaining to a period or periods, or to division by
periods.
[1913 Webster]
The periodical times of all the satellites. --Sir J.
Herschel.
[1913 Webster]
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.
[1913 Webster]
3. Happening, by revolution, at a stated time; returning
regularly, after a certain period of time.
[1913 Webster]
The periodic return of a plant's flowering.
--Henslow.
[1913 Webster]
To influence opinion through the periodical press.
--Courthope.
[1913 Webster]
4. Acting, happening, or appearing, at fixed or somewhat
variable intervals; recurring; as, periodical epidemics
[1913 Webster]
5. (Rhet.) Of or pertaining to a period; constituting a
complete sentence.
[1913 Webster]
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.
[1913 Webster]
Note: Note: A modern version of the periodic table can be
found at: http://pearl1.lanl.gov/periodic/default.htm
[PJC] 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[
--------------------------------------------------------------
|I. II. III. IV. V. VI. VII. VIII. | RH4 RH3 RH3 RH
|R2O RO R3O3 RO2 R2O5 RO3 R2O7 RO4
--------------------------------------------------------------
H
1
Li
7
Na
23
K
39
(Cu)
63
Rb
85.2
(Ag)
(108)
Cs
133
(-)
(-)
(Au)
(197)
---------------------------------------------------------------
[1913 Webster]
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.
[1913 Webster]
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.
[1913 Webster]
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Thesaurus Results for Periodic:
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1. Moby Thesaurus II by Grady Ward, 1.0 |
alternate, articulated, beating, catenated, ceaseless, circling, concatenated, connected, constant, continual, continued, continuing, continuous, cyclic, cyclical, direct, editorial, endless, episodic, epochal, even, ever-recurring, every other, featureless, fluctuant, fluctuating, fluctuational, frequent, gapless, harmonic, haunting, immediate, incessant, interminable, intermittent, isochronal, isochronous, iterative, joined, jointless, journalese, journalistic, libratory, linked, magazinish, magaziny, measured, metronomic, monotonous, never-ending, newspaperish, newspapery, nonstop, nutational, occasional, on-again-off-again, oscillating, oscillatory, pendular, pendulous, perennial, periodical, pulsing, reappearing, reciprocal, recurrent, recurring, regular, repeated, repetitive, reportorial, resonant, returning, revenant, rhythmic, rotary, round-the-clock, running, seamless, seasonal, serial, serried, smooth, sporadic, stable, steady, straight, thematic, thick-coming, twenty-four-hour, ubiquitous, unbroken, unceasing, undifferentiated, undulant, undulatory, unending, uniform, unintermitted, unintermittent, unintermitting, uninterrupted, unrelieved, unremitting, unstopped, vacillating, vacillatory, vibratile, vibrating, vibratory, wavelike, wavering, wheeling |
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Common Misspellings > |
Periodic ePeriodic ePriodic PePriodic eriodic PPeriodic Preiodic Pereiodic Priodic Peeriodic Peirodic Perirodic Peiodic Perriodic Peroidic Perioidic Perodic Periiodic Peridoic Periodoic Peridic Perioodic Perioidc Periodidc Perioic Perioddic Periodci Periodici Periodc Periodiic Periodcic Periodi Periodicc 0eriodic p0eriodic 0periodic )eriodic p)eriodic )periodic oeriodic poeriodic operiodic leriodic pleriodic lperiodic P3riodic Pe3riodic P3eriodic P#riodic Pe#riodic P#eriodic P4riodic Pe4riodic P4eriodic Pwriodic Pewriodic Pweriodic Prriodic Perriodic Preriodic Psriodic Pesriodic Pseriodic Pdriodic Pedriodic Pderiodic Pfriodic Pefriodic Pferiodic Pariodic Piriodic Poriodic Puriodic Pe4iodic Per4iodic Pe4riodic Pe$iodic Per$iodic Pe$riodic Pe5iodic Per5iodic Pe5riodic Peeiodic Pereiodic Peeriodic Petiodic Pertiodic Petriodic Pediodic Perdiodic Pedriodic Pefiodic Perfiodic Pefriodic Pegiodic Pergiodic Pegriodic Per8odic Peri8odic Per8iodic Per*odic Peri*odic Per*iodic Per9odic Peri9odic Per9iodic Peruodic Periuodic Peruiodic Peroodic Perioodic Peroiodic Perjodic Perijodic Perjiodic Perkodic Perikodic Perkiodic Perlodic Perilodic Perliodic Peraodic Pereodic Peri9dic Perio9dic Peri9odic Peri(dic Perio(dic Peri(odic Peri0dic Perio0dic Peri0odic Periidic Perioidic Periiodic Peripdic Periopdic Peripodic Perikdic Periokdic Perikodic Perildic Perioldic Perilodic Periadic Periedic Periudic Periowic Periodwic Periowdic Perioeic Periodeic Perioedic Perioric Periodric Periordic Periosic Periodsic Periosdic Periofic Periodfic Periofdic Perioxic Periodxic Perioxdic Periocic Periodcic Periocdic Periovic Periodvic Periovdic Perio ic Period ic Perio dic Period8c Periodi8c Period8ic Period*c Periodi*c Period*ic Period9c Periodi9c Period9ic Perioduc Periodiuc Perioduic Periodoc Periodioc Periodoic Periodjc Periodijc Periodjic Periodkc Periodikc Periodkic Periodlc Periodilc Periodlic Periodac Periodec Periodis Periodics Periodisc Periodid Periodicd Periodidc Periodif Periodicf Periodifc Periodix Periodicx Periodixc Periodiv Periodicv Periodivc Periodi Periodic Periodi c Definition commonly spelled as: Defanition or Defenition, Synonym as: Synonim, Sinonym or Sinonim, Thesaurus as: Thesorus or Thesauris, Dictionary as: Dictionery or Dictionry and Define is usually not misspelled. What does mispell meen? It Meens...
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