[ˌpɪərɪˈɒdɪk], (Adjective)

Definitions:
- appearing or occurring at intervals
(e.g: the periodic visits she made to her father)

- relating to the periodic table of the elements

- relating to a rhetorical period


Phrases:

Origin:
mid 17th century: from French périodique, or via Latin from Greek periodikos ‘coming round at intervals’, from periodos (see period)