biological clock

SEE SYNONYMS FOR biological clock ON THESAURUS.COM

noun Physiology.

an innate mechanism of the body that regulates its rhythmic and periodic cycles, as that of sleeping and waking.

Also called body clock .

Origin of biological clock

First recorded in 1950–55

Words nearby biological clock

biolinguistics, biologic, biological, biological accumulation, biological child, biological clock, biological control, biological engineering, biological half-life, biological magnification, biological marker

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for biological clock

biological clock

noun

an inherent periodicity in the physiological processes of living organisms that is not dependent on the periodicity of external factors

the hypothetical mechanism responsible for this periodicity

Cultural definitions for biological clock

biological clock

The innate rhythm of behavior and body activity in living things. A twenty-four-hour cycle of body activity, which operates in some organisms, is called the circadian rhythm.

notes for biological clock

Although the term biological clock refers to all innate timing mechanisms, it is often used when describing certain body functions that are subject to this rhythm, such as the loss of fertility with age.

Medical definitions for biological clock

biological clock

n.

An innate mechanism in living organisms that controls the periodicity or rhythm of various physiological functions or activities.

Scientific definitions for biological clock

biological clock

[ bī′ə-lŏj′ĭ-kəl ]

An internal system that controls an organism's circadian rhythms, the cycles of behavior that occur regularly in a day. In mammals, the biological clock is located near the point in the brain where the two optic nerves cross. In many birds, the biological clock is located in the pineal gland. In protists and fungi, the individual cells themselves regulate circadian rhythms.

单词	biological clock
释义	biological clock SEE SYNONYMS FOR biological clock ON THESAURUS.COM noun Physiology. an innate mechanism of the body that regulates its rhythmic and periodic cycles, as that of sleeping and waking. Also called body clock . Origin of biological clock First recorded in 1950–55 Words nearby biological clock biolinguistics, biologic, biological, biological accumulation, biological child, biological clock, biological control, biological engineering, biological half-life, biological magnification, biological marker Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for biological clock biological clock noun an inherent periodicity in the physiological processes of living organisms that is not dependent on the periodicity of external factors the hypothetical mechanism responsible for this periodicity See also circadian Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to biological clock circadian rhythm, biological rhythm, body clock, biorhythm, cycles Cultural definitions for biological clock biological clock The innate rhythm of behavior and body activity in living things. A twenty-four-hour cycle of body activity, which operates in some organisms, is called the circadian rhythm. notes for biological clock Although the term biological clock refers to all innate timing mechanisms, it is often used when describing certain body functions that are subject to this rhythm, such as the loss of fertility with age. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Medical definitions for biological clock biological clock n. An innate mechanism in living organisms that controls the periodicity or rhythm of various physiological functions or activities. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for biological clock biological clock [ bī′ə-lŏj′ĭ-kəl ] An internal system that controls an organism's circadian rhythms, the cycles of behavior that occur regularly in a day. In mammals, the biological clock is located near the point in the brain where the two optic nerves cross. In many birds, the biological clock is located in the pineal gland. In protists and fungi, the individual cells themselves regulate circadian rhythms. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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biological clock

noun Physiology.

Origin of biological clock

Words nearby biological clock

British Dictionary definitions for biological clock

noun

Words related to biological clock

Cultural definitions for biological clock

notes for biological clock

Medical definitions for biological clock

n.

Scientific definitions for biological clock