astaticism

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a·stat·ic

A0480600 (ā-stăt′ĭk)adj.1. Unsteady; unstable.2. Physics Having no particular directional characteristics.
a·stat′i·cal·ly adv.a·stat′i·cism n.

astaticism

the condition of constant, uninterrupted variability of direction or position. — astatic, adj.See also: Physics