periodical has definitions from the field of writing
1
[ noun ] (writing) a publication that appears at fixed intervals

Used in print

(Edward E. Kelly, S.J., "Christian Unity in England"...)

Almost daily something is reported which feeds this Catholic hope in England : statistics of the increasing numbers of converts and Irish Catholic immigrants ; news of a Protestant minister in Leamington who has offered to allow a Catholic priest to preach from his pulpit ; a report that a Catholic nun had been requested to teach in a non-Catholic secondary_school during the sickness of one of its masters ; the startling statement in a respectable periodical that `` Catholics , if the present system is still in_operation , will constitute almost one-third of the House_of_Lords in the next generation '' ; a report that 200 Protestant clergymen and laity attended a votive Mass offered for Christian unity at a Catholic_church in Slough during the Church Unity Octave .

(Handbook of Federal Aids to Communities. U.S. Dep...)

This periodical , including weekly statistical supplements , is available for $ 4 per_year from Commerce_Field_Offices or Superintendent_of_Documents , U.S._Government Printing_Office , Washington 25 , D.C. .

2
[ adjective ] happening or recurring at regular intervals

Synonyms

periodic

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