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A magazine or other publication which appears at stated or regular intervals.

One who publishes, or writes for, a periodical.

In a periodical manner.

Periodicity.

Of or pertaining to a period or periods, or to division by periods. The periodicaltimes of all the satellites. Sir J. Herschel.

A small periodical change of position in the stars and other heavenly bodies, due to the combined effect of the motion of light and the motion of the observer; called annual aberration, when the observer's motion is that of the earth in its orbit, and dairy or diurnal aberration, when of the earth on its axis; amountin…

A current which periodically changes or reverses its direction of flow.

f anomaly, or from any point in its elliptic orbit to the same again. -- Anomalistic, or Periodical year. See under Year.

The periodical sessions of the judges of the superior courts in every county of England for the purpose of administering justice in the trial and determination of civil and criminal cases; -- usually in the plural. Brande. Wharton. Craig. Burrill.

A building or an apartment where a library, periodicals, and newspapers are kept for use.

The editor of a periodical. [Obs.]

A periodical publication, especially one containing the proceeding of a society. Bulletin board, a board on which announcements are put, particularly at newsrooms, newspaper offices, etc.

The act of moving or revolving around, or as in a circle or orbit; a revolution; as, the periodical circuit of the earth round the sun. Watts.

ial labor. E. Everett. Congressional District, one of the divisions into which a State is periodically divided (according to population), each of which is entitled to elect a Representative to the Congress of the United States.

One who communicates information, etc., by letter or telegram to a newspaper or periodical.

mpleted, and then returns again and again, uniformly and continually in the same order; a periodical space of time marked by the recurrence of something peculiar; as, the cucle of the seasons, or of the year. Wages . . . bear a full proportion . . . to the medium of provision during the last bad cycle of twenty years.…

e, but is indirectly exercised through a system of representation and delegated authority periodically renewed; a constitutional representative government; a republic.

A collective name for reviews, magazines, and all kinds of periodical literature. Brande & C.

Periodical; annual; -- applied to winds which annually blow from the north over the Mediterranean, esp. the eastern part, for an irregular period during July and August.

A periodical increase of violence in a disease, as in remittent or continious fever; an increased energy of diseased and painful action.