Definition of lapis lazuli noun from the Oxford Advanced Learner's Dictionary

 

lapis lazuli

 noun
noun
BrE BrE//ˌlæpɪs ˈlæzjʊli//
 
; NAmE NAmE//ˌlæpɪs ˈlæzəli//
 
[uncountable]
 
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a bright blue stone, used in making jewellery Word Origin late Middle English: from Latin lapis ‘stone’ and medieval Latin lazuli, genitive of lazulum, from Persian lāžward ‘lapis lazuli’. Compare with azure.
See the Oxford Advanced American Dictionary entry: lapis lazuli