A publication issued regularly, but less frequently than daily.

Periodic. / Published at regular intervals of more than one day, especially weekly, monthly, or quarterly. / Of, or relating to such a publication.

In a manner that is regular or periodic. / intermittently or recurrently

plural of periodical

plural of periodization

(transitive) To divide (history) into periods.

Relating to the highest oxidation state of iodine; of or derived from a periodic acid.

Relative to a period or periods. / Having repeated cycles. / Occurring at regular intervals. / Periodical. / (astronomy) Pertaining to the revolution of a celestial object in its orbit.

(obsolete, intransitive) To come to a period; to conclude. / (obsolete, transitive, rare) To put an end to.

A length of time. / A period of time in history seen as a single coherent entity; an epoch, era.