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arcus juvenilis

ar·cus ju·ve·nil·is [ rkəss joovə nílliss ]


noun 
Definition:
 
white corneal ring in young person: an opaque circle around the cornea of the eye, identical to arcus senilis but occurring in young people. It may be associated with a genetic form of high blood cholesterol.

[< Latin, "youthful bow," after arcus senilis]
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