biorhythm

English

Etymology

First coined 1960, from bio- +‎ rhythm

Pronunciation

  • (US) IPA(key): /ˈbaɪ.oʊˌɹɪð.əm/
  • Audio (General American):(file)

Noun

biorhythm (plural biorhythms)

  1. (biology) Any cyclic biological or physiological pattern or activity.
  2. (pseudoscience) Any of three sinusoidal graphs, normally plotted by computer, having a person's birthdate as origin, that are claimed to give meaningful information about emotional levels, physical energy levels, and mental/psychic sensitivity.
    • 1977 February 5, “Personal advertisement”, in Gay Community News, volume 4, number 32, page 14:
      Gay Biorhythms. Be Sure, Be Safe. Biorhythms charted for 1 year. Graphs or calendar. For more information write GCN Box 706.

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