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Pronunciation: spi'ral


  1. Coiled; winding around a center like a watch spring; winding and ascending like a wire spring.
  2. A structure in the shape of a coil.

[Mediev. L. spiralis, fr. G. speira, a coil]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.