volution noun.
[vǝ'lu:ʃ(ǝ)n] L15.[Late Latin volutio(n-), from Latin volut- pa. ppl stem of volvere to roll: see -ION.]1. A rolling or revolving movement.
L15.2. A spiral twist; a coil, a convolution.
M18.3. A whorl of a spiral shell.
L19. [TahlilGaran] English Dictionary ▲