different between nycthemeral vs circadian

English

Adjective

nycthemeral (not comparable)

1. Alternative spelling of nychthemeral

English

Etymology

From the Latin circ? (“about”) and di?s (“a day”) with the English suffix -an. Compare circannual.

Pronunciation

• IPA^(key): /s???ke?di?n/

Adjective

circadian (not comparable)

1. (biology) of, relating to, or showing rhythmic behaviour with a period of 24 hours; especially of a biological process
   • 2000, Arnold Sameroff, et al., Handbook of Developmental Psychopathology, page 310

     The circadian clock is involved in the regulation of the diurnal sleep-wake cycle, […].

Synonyms

• diurnal (in its sense of "happening on a 24-hour cycle")

Derived terms

• circadian rhythm
• circadian clock

Related terms

• circalunar / circalunidian
• circasemidian

Translations

See also

• infradian
• ultradian

Anagrams

• cardician

Romanian

Etymology

From French circadien

Adjective

circadian m or n (feminine singular circadian?, masculine plural circadieni, feminine and neuter plural circadiene)

1. circadian

Declension