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plural varices
(medicine) A varicose, i.e. swollen and knotted, vein. examples
(zoology) In mollusks, a particular ridge on the shell, corresponding to a former position of the aperture. quotations
In the personid genus Distorsio, varix formation is accompanied by a reorientation of the aperture.
1995, Geerat J. Vermeij, A Natural History of Shells, page 31