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Pronunciation varies by accent · noun
(chemistry) a chemical agent added to a material, such as rocket propellant, to make it opaque.
Use opacifier when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Opacifier means (chemistry) a chemical agent added to a material, such as rocket propellant, to make it opaque.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use opacifier where its definition matches the intended context.
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