ultradian

U1L1T1R1A1D2I1A1N1

adjective

Cyclical with a periodicity significantly shorter than 24 hours, that is, more frequent than circadian.

Scrabble 10
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Meanings

adjectiveultradian (not comparable)
  1. not comparableCyclical with a periodicity significantly shorter than 24 hours, that is, more frequent than circadian.

    Ultradian rhythms […] operate in cycles of less than 24 hours, that is they happen more than once a day.

    1999, Evie Bentley, Awareness: Biorhythms, Sleep and Dreaming, page 15

Translations

French ultradien
  • ultradienTranslations

Rhymes & wordplay

Anagrams

dinatural
Cite this entry
APA

ultradian. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/ultradian

MLA

“ultradian.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/ultradian. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “ultradian,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/ultradian.

Source: ultradian on Wiktionary, CC BY-SA 4.0.