Merriam-Webster's Collegiate Dictionary
pe·ri·od·i·cal \\ˌpir-ē-ˈä-di-kəl\\ adjective DATE 1601
1. periodic
12.
a. published with a fixed interval between the issues or numbers
b. published in, characteristic of, or connected with a periodicalnoun DATE 1798
: a periodical publication
Oxford Advanced Learner's Dictionary-牛津双解-OALD7
periodical
peri·od·ical / 7piEri5Cdikl; NAmE 7piri5B:d- / noun a magazine that is published every week, month, etc., especially six that is concerned with an academic subject
(学术)期刊
periodical noun
⇨ magazine
Webster's Third New International Dictionary, Unabridged
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periodical cicada
, or
periodical year
pe·ri·od·i·calI. \|pirē|ädə̇kəl, |pēr-, -dēk-\
adjectiveEtymology: Latin
periodicus + English
-al1. : periodic
1
< when the bookmobile pulls in for its periodical call — Saturday Review >2.
a. : published with a fixed interval usually longer than a day between the issues or numbers
< newspapers and periodical publications >
< keeping up with the periodical literature on the arts >
b. : published in, characteristic of, or connected with a periodical
< periodical book reviews >
< periodical room in a library >II. noun
(
-s)
: a magazine or other publication of which the issues appear at stated or regular intervals — usually used of a publication appearing more frequently than annually but infrequently used of a newspaper