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1. The shape of something rotating rapidly
   - whirl, swirl, vortex
    
2. A convex fold or elevation in the surface of the brain
   - gyrus
    
3. The action of coiling or twisting or winding together

Derived forms: convolutions

See also: convolve

Type of: anatomical structure, bodily structure, body structure, change of shape, complex body part, round shape, structure

Part of: cerebrum

Encyclopedia: Convolution