An-frăc-tū-ōs'i-ty, n.

n. [Fr. anfractuosité. See infra.]

1. A state of being anfractuous, or full of windings and turnings. “The anfractuosities of his intellect and temper.” Macaulay.
2. (Anal.) A sinuous depression like those separating the convolutions of the brain. Dunglison.