Methodical procedure (6)
I believe the answer is:
system
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">methodical procedure</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for system that I've seen before include "Complex whole; method" , "Group of interrelated elements comprising a unified whole" , "A complete set of procedures for doing something" , "Way" , "Method of working" .)