biorhythm
/ˈbaɪ.oʊˌɹɪð.əm/noun
biorhythm is spelled B-I-O-R-H-Y-T-H-M: 9 letters and 4 syllables. It appears about once in every 32 million words in written English, the 171,907th most frequent word form (wordfreq, 2021 data). As a noun, biorhythm means “Any cyclic biological or physiological pattern or activity” (English Wiktionary, September 2026). The plural of biorhythm is biorhythms.
How many letters and syllables are in biorhythm?
| Letters | 9: B-I-O-R-H-Y-T-H-M |
|---|---|
| Syllables | 4 (from its pronunciation) |
| In writing | about once in every 32 million words; the 171,907th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is biorhythm?
Biorhythm appears about once in every 32 million words in written English, the 171,907th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce biorhythm?
- US /ˈbaɪ.oʊˌɹɪð.əm/
Biorhythm has 4 syllables (counted from the pronunciation).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Qwertygiy-biorhythm.wav, Wikimedia Commons (author and licence on each file's page).
Forms of biorhythm
- biorhythms plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does biorhythm mean?
The meanings the English Wiktionary records, quoted as written there (source below).
noun
- 1
Any cyclic biological or physiological pattern or activity.
- 2
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.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Biorhythm in Spanish, French, German and Portuguese
In the sense biological pattern:
| Language | Words |
|---|---|
| Portuguese | biorritmo |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does biorhythm come from?
First coined 1960, from bio- + rhythm.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).