Sentence:  The workings of the <WSD>recombinator</WSD> are exceedingly complex, an inevitable consequence of the engineer's attempts to juggle the hundreds of possible combinations of processes and subprocesses and to anticipate the contingencies that might arise in an activity so subject to the vagaries of human nature and performance as human resource management. 
Meaning of the word marked with <WSD> tags:  Any of various devices or components that serve to recombine inputs.