单词	tetrahymena
释义	tetrahymena noun tet·​ra·​hy·​me·​na ˌte-trə-ˈhī-mə-nə  : any of a genus (Tetrahymena) of ciliate protozoans Word History Etymology New Latin, from tetra- + Greek hymēn membrane First Known Use 1962, in the meaning defined above Medical Definition tetrahymena noun tet·​ra·​hy·​me·​na -ˈhī-mə-nə  1 capitalized : a genus of free-living ciliate protozoans much used for genetic and biochemical research 2 : any ciliate protozoan of the genus Tetrahymena
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