volution

from WordNet (r) 3.0 (2006)

volution
    n 1: a rolling or revolving motion

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]