hypernychthemeral

adjective

Of or relating to a neurological sleep disorder characterized by one- to two-hour daily delays in sleep onset and wake times, i.e. a circadian rhythm greater than a nychthemeron (24 hours).

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Meanings

adjectivehypernychthemeral (not comparable)
  1. not comparableOf or relating to a neurological sleep disorder characterized by one- to two-hour daily delays in sleep onset and wake times, i.e. a circadian rhythm greater than a nychthemeron (24 hours).

Origin

From hyper- + nychthemeral.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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