a succession of stages or operations or processes or units; "progressing in severity as though a cascade of genetic damage was occurring"; "separation of isotopes by a cascade of processes"
a small waterfall or series of small waterfalls
arrange (open windows) on a computer desktop so that they overlap each other, with the title bars visible
formally reject or disavow a formerly held belief, usually under pressure; "He retracted his earlier statements about his religion"; "She abjured her beliefs"