convolution

A twist or fold.

Any of the folds on the surface of the brain.

The shape of something rotating; a vortex.

The state or condition of being convoluted.

(mathematics, functional analysis) A mathematical operation on two functions that produces a third that expresses how the shape of one is modified by the other; the integral of the product of the two functions after one is reflected about the y-axis and shifted along the x-axis.

(computing) A function which maps a tuple of sequences into a sequence of tuples.

One 360° turn in a spring or similar helix.