Transcription
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- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
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- [sur-key-dee-uh n, -kad-ee-, sur-kuh-dee-uh n]
- /sɜrˈkeɪ di ən, -ˈkæd i-, ˌsɜr kəˈdi ən/
- /sɜːˈk.eɪ.diən/
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- US Pronunciation
- US IPA
-
- [sur-key-dee-uh n, -kad-ee-, sur-kuh-dee-uh n]
- /sɜrˈkeɪ di ən, -ˈkæd i-, ˌsɜr kəˈdi ən/
Definitions of circadian word
- adjective circadian of or relating to biological processes that occur regularly at about 24-hour intervals, even in the absence of periodicity in the environment 3
- adjective circadian designating or of behavioral or physiological rhythms associated with the 24-hour cycles of the earth's rotation, as, in man, the regular metabolic, glandular, and sleep rhythms which may persist through a dislocation of day and night caused by high-speed travel 3
- adjective circadian noting or pertaining to rhythmic biological cycles recurring at approximately 24-hour intervals. 1
- noun circadian (of biological processes) recurring naturally on a twenty-four-hour cycle, even in the absence of light fluctuations. 1
- adjective circadian biology: recurring every 24 hours 1
- adjective circadian (biology) of, relating to, or showing rhythmic behaviour with a period of 24 hours; especially of a biological process. 0
Information block about the term
Origin of circadian
First appearance:
before 1955 One of the 4% newest English words
1955-60; < Latin circā about + di(ēs) day + -an
Historical Comparancy
Parts of speech for Circadian
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
circadian popularity
A common word. It’s meaning is known to most children of preschool age. About 79% of English native speakers know the meaning and use the word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".
circadian usage trend in Literature
This diagram is provided by Google Ngram ViewerSynonyms for circadian
adj circadian
- regularly — at regular times or intervals.
- often — many times; frequently: He visits his parents as often as he can.
- periodic — of or derived from a periodic acid.
- constantly — not changing or varying; uniform; regular; invariable: All conditions during the three experiments were constant.
- regular — usual; normal; customary: to put something in its regular place.
adjective circadian
- daily — If something happens daily, it happens every day.
Antonyms for circadian
adj circadian
- variable — apt or liable to vary or change; changeable: variable weather; variable moods.
- abnormal — Someone or something that is abnormal is unusual, especially in a way that is worrying.
- unusual — not usual, common, or ordinary; uncommon in amount or degree; exceptional: an unusual sound; an unusual hobby; an unusual response.
- infrequent — happening or occurring at long intervals or rarely: infrequent visits.
- nightly — coming or occurring each night: his nightly walk to the newsstand.
Top questions with circadian
- what is circadian rhythm?
- what are circadian rhythms?
- what is a circadian rhythm?
- what is the circadian rhythm?
- how to reset your circadian rhythm?
- what does circadian mean?
- which is an example of circadian rhythm in plants?
- how to reset circadian rhythm?
- what controls the circadian rhythm?
- how does circadian rhythm work?
- what is the circadian system?
- what is circadian?
- what is an example of circadian rhythm?
- what is the circadian cycle?
- what does circadian rhythm mean?
See also
Matching words
- Words starting with c
- Words starting with ci
- Words starting with cir
- Words starting with circ
- Words starting with circa
- Words starting with circad
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- Words starting with circadia
- Words starting with circadian