ornamentation
noun/ˌɔːnəmenˈteɪʃn/
/ˌɔːrnəmenˈteɪʃn/
[uncountable]- the use of objects, designs, etc. to decorate something
- The architect was instructed to keep ornamentation to a minimum.
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ornamentation
Definition of ornamentation noun from the Oxford Advanced Learner's Dictionary