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Dictionary

Words, grammatical forms and meanings linked to the ontology.

hypernychthemeral en · ADJ

Etymology

From hyper- + nychthemeral.

Meanings

  1. (not-comparable) 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).