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Definition of Nacre
1. Noun. The iridescent internal layer of a mollusk shell. 
Definition of Nacre
1. n. A pearly substance which lines the interior of many shells, and is most perfect in the mother-of-pearl. [Written also nacker and naker.] See Pearl, and Mother-of- pearl.
Definition of Nacre
1. the pearly internal layer of certain shells [n -S] : NACRED, NACREOUS [adj]
Medical Definition of Nacre
1. 




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