biorhythm
nounUS /ˈbaɪ.oʊˌɹɪð.əm/
Etymology First coined 1960, from bio- + rhythm.
1
Biology, Natural sciences Any cyclic biological or physiological pattern or activity.
2
Pseudoscience Any of three sinusoidal graphs, normally plotted by a computer, containing a person's birthdate as an origin, that are claimed to provide meaningful information about emotional levels, physical energy levels, and mental or psychic sensitivity.
- Gay Biorhythms. Be Sure, Be Safe. Biorhythms charted for 1 year. Graphs or calendar. For more information write GCN Box 706.1977 February 5, “Personal advertisement”, in Gay Community News, volume 4, number 32, page 14:
- Derived terms
- biorhythmic, biorhythmics
- Related terms
- biofeedback