Definitions:

1. A high-speed centrifuge capable of generating extremely strong centrifugal forces, used to separate tiny or dense particles, based on their size and density. NOUN
   • An ultracentrifuge is essential for studying the structure of macromolecules.
2. A very fast centrifuge used to precipitate large biological molecules from solution or separate them by their different rates of sedimentation. NOUN
   • The lab used an ultracentrifuge to isolate mitochondria from the cell sample.