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Pronunciation varies by accent · noun
(physics) A substance, such as liquid helium, that exhibits superfluidity..
Use superfluid when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Superfluid means (physics) A substance, such as liquid helium, that exhibits superfluidity..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use superfluid where its definition matches the intended context.
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