noun
serial publication
A formal term for any publication issued in successive parts, such as periodicals, journals, or series. Often used in library and bibliographic contexts.
この図書館では逐次刊行物を多数所蔵している。
This library holds a large number of serial publications.
定期刊行物 specifically refers to periodicals published at regular intervals, while 逐次刊行物 is a broader term that includes irregularly published series as well.
Compound of 逐次 (successively) + 刊行物 (publication). The term is a direct combination of its components with no irregular historical derivation.