Biorhythm
Internal clock and biorhythm are semantically related in biological clock topic. In some cases you can use "Internal clock" instead a noun "Biorhythm".
Internal clock
Biorhythm and internal clock are semantically related in biological clock topic. You can use "Biorhythm" instead a noun phrase "Internal clock".
Mutual synonyms
Cite this Source
Internal clock and Biorhythm. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/biorhythm/internal_clock
Biorhythm & Internal clock. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/biorhythm/internal_clock>.
Internal clock or Biorhythm. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/biorhythm/internal_clock.
Google Ngram Viewer shows how "biorhythm" and "internal clock" have occurred on timeline