periodize

From period +‎ -ize.

• IPA^(key): /ˈpɪəɹɪəˌdaɪz/

periodize (third-person singular simple present periodizes, present participle periodizing, simple past and past participle periodized)

1. (transitive) To divide (history) into periods.
2. (weightlifting, sports) To split (a training program) into segments of a few weeks or months, so that training begins at lower intensity and is gradually increased to high intensity.
3. (mathematics) To form a periodic function from a non-periodic function.

• period
• periodization