cingulum

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cingulum

[′sin·gyə·ləm]
(anatomy)
The ridge around the base of the crown of a tooth.
(botany)
The part of a plant between stem and root.
(invertebrate zoology)
Any girdlelike structure.
A band of color or a raised line on certain bivalve shells.
The outer zone of cilia on discs of certain rotifers.
The clitellum in annelids.
(neuroscience)
The tract of association nerve fibers in the brain, connecting the callosal and the hippocampal convolutions.