单词	nucleolus
释义	nucleolus noun nu·​cle·​o·​lus nü-ˈklē-ə-ləs  nyü- plural nucleoli nü-ˈklē-ə-ˌlī  nyü- : a spherical body of the nucleus of most eukaryotes that becomes enlarged during protein synthesis, is associated with a nucleolus organizer, and contains the DNA templates for ribosomal RNA see cell illustration nucleolar nü-ˈklē-ə-lər  nyü- adjective Example Sentences Recent Examples on the Web In 2012, Brangwynne and colleagues saw similar fluid features in the nucleolus, a dense mix of proteins, RNA, and DNA that manufactures ribosomes, the cell’s protein factories. Mitch Leslie, Science | AAAS, 21 Jan. 2021 More membraneless structures continued to be found, such as the nucleolus, a dense structure in the cell nucleus. Quanta Magazine, 26 Nov. 2018 But there’s more to the nucleolus than just making ribosomes. Joanna Klein, New York Times, 20 May 2018 Word History Etymology New Latin, from Latin, diminutive of nucleus First Known Use 1839, in the meaning defined above Phrases Containing nucleolus nucleolus organizer nucleolus organizer Medical Definition nucleolus noun nu·​cle·​o·​lus n(y)ü-ˈklē-ə-ləs  plural nucleoli -ˌlī  : a spherical body of the nucleus of most eukaryotes that becomes enlarged during protein synthesis, is associated with a nucleolus organizer, and contains the DNA templates for ribosomal RNA called also plasmosome
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