Definition of lentigo noun from the Oxford Advanced Learner's Dictionary

 

lentigo

 noun
noun
BrE BrE//lenˈtaɪɡəʊ//
 
; NAmE NAmE//lenˈtaɪɡoʊ//
 
[uncountable](medical)
 
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a condition in which small brown areas appear on the skin, usually in old people see also liver spot Word Origin late Middle English (denoting a freckle or pimple): from Latin, from lens, lent- ‘lentil’.
See the Oxford Advanced American Dictionary entry: lentigo