Definition of convolution

• n. - The act of rolling anything upon itself, or one thing upon another; a winding motion.
• n. - The state of being rolled upon itself, or rolled or doubled together; a tortuous or sinuous winding or fold, as of something rolled or folded upon itself.
• n. - An irregular, tortuous folding of an organ or part; as, the convolutions of the intestines; the cerebral convolutions. See Brain.