biological rhythm: meaning, definition, pronunciation and examples
C1Academic, Scientific, Medical
Quick answer
What does “biological rhythm” mean?
A cyclical pattern of physiological, biochemical, or behavioral processes occurring in living organisms.
Audio
Pronunciation
Definition
Meaning and Definition
A cyclical pattern of physiological, biochemical, or behavioral processes occurring in living organisms.
A regular, internally-driven pattern of change in a biological function, such as the sleep-wake cycle, hormonal fluctuations, or body temperature, often synchronized with environmental cues like light and dark.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences; the compound noun is identical in both varieties.
Connotations
Identical scientific connotations.
Frequency
Slightly more frequent in American academic publishing due to larger volume, but proportionally equal in scientific discourse.
Grammar
How to Use “biological rhythm” in a Sentence
The [noun] follows a [adjective] biological rhythm.[Subject] disrupts/entrains/synchronizes the biological rhythm of [object].There is a clear biological rhythm in [process].Vocabulary
Collocations
Examples
Examples of “biological rhythm” in a Sentence
verb
British English
- The cycle biologically rhythms throughout the day.
- (Note: direct verbal use is extremely rare and non-standard; 'oscillates' or 'cycles' is used)
American English
- The process rhythms biologically on a 24-hour schedule.
- (Note: direct verbal use is extremely rare and non-standard; 'fluctuates' is used)
adverb
British English
- The hormone is secreted biological-rhythmically.
- (Note: This form is highly technical and virtually unused)
American English
- The cells fire biological rhythmically.
- (Note: This form is highly technical and virtually unused)
adjective
British English
- The biological-rhythm research centre published new findings.
- She studied the biological-rhythm disturbances in mice.
American English
- The biological rhythm research center published new findings.
- He is a leading biological rhythm researcher.
Usage
Meaning in Context
Business
Rare. May appear in discussions of shift work productivity or jet lag for international travel.
Academic
Core term in biology, physiology, medicine, psychology, and chronobiology.
Everyday
Used when discussing sleep patterns, jet lag, or the effects of shift work.
Technical
Precise term for describing periodic biological phenomena in research papers and clinical settings.
Vocabulary
Synonyms of “biological rhythm”
Strong
Neutral
Weak
Vocabulary
Antonyms of “biological rhythm”
Watch out
Common Mistakes When Using “biological rhythm”
- Using 'biological rhythm' to refer to pseudoscientific 'biorhythms' predicting mood. Confusing it solely with the sleep cycle (which is just one example). Misspelling 'rhythm'. Using as a countable noun without an article (e.g., 'He has biological rhythm' vs. 'He has a disturbed biological rhythm').
FAQ
Frequently Asked Questions
In everyday talk, they are sometimes used interchangeably. However, in science, 'biological rhythm' is the correct, broad term. 'Biorhythm' often refers to a disproven pseudoscientific theory about emotional, physical, and intellectual cycles.
The circadian rhythm, which approximates a 24-hour cycle, regulating sleep-wake patterns, hormone release, and body temperature.
You cannot fundamentally change its endogenous nature, but you can 'reset' or 'entrain' it using external cues like light exposure (e.g., morning sunlight), consistent meal times, and regular sleep schedules.
Chronobiology is the scientific field dedicated to studying biological rhythms and temporal phenomena in living organisms.
A cyclical pattern of physiological, biochemical, or behavioral processes occurring in living organisms.
Biological rhythm is usually academic, scientific, medical in register.
Biological rhythm: in British English it is pronounced /ˌbaɪ.əˌlɒdʒ.ɪ.kəl ˈrɪð.əm/, and in American English it is pronounced /ˌbaɪ.əˌlɑː.dʒɪ.kəl ˈrɪð.əm/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “To be out of sync with one's biological rhythm”
- “To reset one's biological clock”
Learning
Memory Aids
Mnemonic
Think BIOlogical RHYTHM: Your body has a natural BIO beat and RHYTHM, like a song it plays every day (sleep, eat, wake).
Conceptual Metaphor
THE BODY IS A CLOCK (e.g., 'My internal clock is off today'). LIFE IS A CYCLE.
Practice
Quiz
Which of the following is a specific TYPE of biological rhythm?