Describing something that is not periodic or does not follow a regular, recurring pattern or cycle.
From 'anti-' (against) combined with 'periodic' (occurring at regular intervals, from Greek 'periodikos'). The term is used in mathematics and physics to describe systems without regular cycles.
In mathematics, an antiperiodic function is gloriously unpredictable—it refuses to repeat itself on schedule, which makes it either wonderfully chaotic or mathematically fascinating depending on your mood.
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