- infradian
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Cyclical with a periodicity significantly longer than 24 hours, that is, less frequent than circadian.
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infradian
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infradian — Relating to biologic variations or rhythms occurring in cycles less frequent than every 24 hours. Cf.:circadian, ultradian. [infra + L. dies, day] * * * in·fra·di·an in frā dē ən adj being, characterized by, or occurring in periods or cycles (as… … Medical dictionary
Infradian rhythm — An infradian rhythm is a rhythm with a period greater than the period of a circadian rhythm, i.e. with a frequency smaller than one cycle in 28 hours. [Brown, Frederick M. Graeber, R. Curtis, eds.. The Rhythmic Aspects of Behavior. Hillsdale, NJ … Wikipedia
infradian — in|fra|di|a̲n [zu ↑infra... u. lat. dies = Tag]: jenseits der 24 Stunden Periodik ablaufend (von Lebensvorgängen gesagt) … Das Wörterbuch medizinischer Fachausdrücke
infradian — in|fra|di|an <aus gleichbed. nlat. infradianus zu ↑infra... u. lat. dies »Tag«> einen Biorhythmus bezeichnend, dessen Periodenlänge mehr als einen Tag aufweist (z. B. den Menstruationszyklus der Frau; Med., Biol.) … Das große Fremdwörterbuch
infradian — [ɪn freɪdɪən] adjective Physiology recurring less than once a day. Compare with ultradian. Origin 1960s: from infra below , on the pattern of circadian … English new terms dictionary
infradian — … Useful english dictionary
infradian rhythm — a biological rhythm with a periodicity longer than 28 hours or with a frequency less than one cycle per 24 hour, e.g. lunar and seasonal rhythms … Dictionary of ichthyology
infradian rhythm — the regular recurrence in cycles of more than 24 hours from one stated point to another, such as certain biologic activities that occur at such intervals, regardless of conditions of illumination … Medical dictionary
ultradian — Relating to biologic variations or rhythms occurring in cycles more frequent than every 24 hours. Cf.:circadian, infradian. [ultra + L. dies, day] * * * ul·tra·di·an əl trād ē ən adj being, characterized by, or occurring in periods or cycles (as… … Medical dictionary
Biorhythm — A biorhythm (from Greek βιορυθμός biorhuthmos ) is a hypothetical cycle in physiological, emotional, or intellectual well being or prowess. Bio pertains to life and rhythm pertains to the flow with regular movement. Biorhythms theory has no more… … Wikipedia
