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Pronunciation varies by accent · noun
A high-speed centrifuge, especially one free from convection that is used to separate colloidal particles..
Use ultracentrifuge when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Ultracentrifuge means A high-speed centrifuge, especially one free from convection that is used to separate colloidal particles..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use ultracentrifuge where its definition matches the intended context.
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