ultracentrifugation

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noun

ul·​tra·​cen·​tri·​fu·​ga·​tion -ˌsen-trə-fyu̇-ˈgā-shən 

: the process of using an ultracentrifuge

ultracentrifuge

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noun

ul·​tra·​cen·​tri·​fuge -ˈsen-trə-ˌfyüj 

: a high-speed centrifuge able to sediment colloidal and other small particles and used especially in determining sizes of such particles and molecular weights of large molecules

ultracentrifuge

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transitive verb

ultracentrifuged; ultracentrifuging

: to subject to centrifugal action in an ultracentrifuge

ultracentrifuge blood plasma