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                           general:: 
                            Phrase(s): the cutting edge 
Fig. the most forward part of a trend; the leading part of a trend. (Alludes to the edge of a sword. See also on the cutting edge. See also on the bleeding edge.)  •  Fred’s invention put him on the cutting edge of the computer chip business.
                        
                        
 
                        
                            McGrawhill's American Idioms And Phrasal Verbs