#irregularity

• Anomaly — A deviation from a norm, from a rule, or from natural laws of development; irregularity, strangeness, structural or functional non-conformity. In medicine, the term denotes a congenital malformation, anatomical asymmetry, or biological disruption present from birth. In astronomy, it represents a structural angle used to determine the exact position of a celestial body on its elliptical orbit relative to the periastron.
• Arrhythmicity — The quality, state, or character of being arrhythmic; the total or partial absence of rhythm, cadence, or regularity in the development of a biological, physical, or mechanical phenomenon. In a clinical context, it represents a pathological structural manifestation describing the instability of physiological frequencies, analyzed in detail using diagrams and monitoring devices.