This is the 509th most frequent Japanese word.
定例
"定例" means "regularly scheduled" or "routine."
「定例」 here refers to something occurring on a regular, predefined schedule, such as a monthly meeting.
この会議は毎月定例で行われます。
This meeting is held regularly every month.
「定例」 describes a report that is expected to be submitted on a routine schedule, usually recurring periodically.
彼は定例の報告書を提出しました。
He submitted the regular report.
「定例」 in this context implies an activity that is regularly performed as a standard practice, like scheduled cleaning.