The shape of something rotating; a vortex.
One 360° turn in a spring or similar helix.
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.
Any of the folds on the surface of the brain.
A twist or fold.
The state or condition of being convoluted.
A function which maps a tuple of sequences into a sequence of tuples.
A shake, quiver, or vibration.
To shake, quiver, or vibrate.
To fear; to be afraid.