spliceosome

spli·ce·o·some

noun \ˈsplī-sē-ə-ˌsōm\

Definition of SPLICEOSOME

: a ribonucleoprotein complex that is the site in the cell nucleus where introns are excised from precursor messenger RNA and exons are joined together to form functional messenger RNA

—spli·ce·o·som·al \ˌsplī-sē-ə-ˈsō-məl\ adjective