n. The act of rolling. or winding together, or of winding one part or thing on another; the motion or process of winding in and out.n. The state of being rolled upon itself, or rolled or wound together.n. A turn or winding; a fold; a gyration; an anfractuosity; a whorl: as, the convolutions of a vine; the convolutions of the intestines.n. In anatomy, specifically, one of the gyri, gyres, or anfractuosities of the brain, especially of the cerebrum. See cuts under brain and corpus.n. In mathematics, such a connection between the relations of any asyzygetic system that each is applied alternately in the aggregate of the remaining relations.