ATTRACTOR Definition & Meaning

attractor

[ uh-trak-ter ]

Phonetic (Standard)IPA

noun

a person or thing that attracts.
Physics. a state or behavior toward which a dynamic system tends to evolve, represented as a point or orbit in the system's phase space.

attractor

/ ə-�ٰ�ă��′��ə�� /

A set of states of a dynamic physical system toward which that system tends to evolve, regardless of the starting conditions of the system.
◆ A point attractor is an attractor consisting of a single state. For example, a marble rolling in a smooth, rounded bowl will always come to rest at the lowest point, in the bottom center of the bowl; the final state of position and motionlessness is a point attractor.
◆ A periodic attractor is an attractor consisting of a finite or infinite set of states, where the evolution of the system results in moving cyclically through each state. The ideal orbit of a planet around a star is a periodic attractor, as are periodic oscillations . A periodic attractor is also called a limit-cycle.
◆ A strange attractor is an attractor for which the evolution through the set of possible physical states is nonperiodic (chaotic), resulting in an evolution through a set of states defining a fractal set. Most real physical systems (including the actual orbits of planets) involve strange attractors.

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�y��vlog History and Origins

Origin of attractor¹

First recorded in 1645–55

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Example Sentences

Examples have not been reviewed.

Short-time attractors are structures that influence a system's dynamics and motion for a limited time, but do not determine long-term behaviors.

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The idea is to draw them to items that trainers call “attractors” — like a ball or a rag — and puppies are challenged to catch them.

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"Wrath of Khan" revolved around a vendetta, a more reliable attractor for moviegoers than a story about a speculative concept.

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The researchers also tested turpentine, a bear attractor, and the ticks despised it as well.

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Again, they found a torus, a shape that persisted regardless of the rat's environment or state of being, a finding that supports the theory of continuous attractor networks.

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