This section is from "The Encyclopaedia Britannica". Also available from Amazon: Great Books of the Western World (60 Volumes).
Anfractuosity (from Lat. anfractuosus, winding), twisting and turning, circuitousness; a word usually employed in the plural to denote winding channels such as occur in the depths of the sea, mountains, or the fissures (sulci) separating the convolutions of the brain, or, by analogy, in the mind.
 
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