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Definition of nacreous
: possessing the qualities of, consisting of, or abounding in nacre; also : iridescent
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Examples of nacreous in a Sentence
the nacreous lining of the shell of a mollusk
Recent Examples of nacreous from the Web
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The cold air the storm blew in also led to the formation of beautiful nacreous clouds.
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Also called polar stratospheric clouds (or less precisely, rainbow clouds), nacreous clouds normally only form in high latitudes and at extremely cold temperatures.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'nacreous.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of nacreous
1819
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