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Definition overlay in British English

overlay noun

[countable] noun
/ˈəʊv(r)əˌleɪ/
1

a thin layer of a substance that has been applied to a surface, especially for decoration

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1.1

a set of extra features that are added to a picture, for example by using a computer

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2

a noticeable amount of a sound, taste, smell, or feeling that is added to another

Synonyms and related words
Definition overlay in British English