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/ˌluːməˈnɛɹ/ · noun
An electrical device that contains an electric lamp that provides illumination..
Use luminaire when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Luminaire means An electrical device that contains an electric lamp that provides illumination..
Common synonyms include light fixture, lighting fixture.
The opposite depends on the specific sense.
Use luminaire where its definition matches the intended context.
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