What does ultraluminous mean?
Ultraluminous means Very luminous.
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Pronunciation varies by accent · adjective
Very luminous.
Use ultraluminous when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Ultraluminous means Very luminous.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use ultraluminous where its definition matches the intended context.
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