volution


From The Collaborative International Dictionary of English v.0.48:

Volution \Vo*lu"tion\, n. [Cf. LL. volutio an arch, vault.]
   [1913 Webster]
   1. A spiral turn or wreath.
      [1913 Webster]

   2. (Zool.) A whorl of a spiral shell.
      [1913 Webster]
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