1. 
   Therblig
   The therblig is used in the study of motion economy in the workplace. A workplace task is analyzed by recording each of the therblig units for a process, with the results used for optimization of manual labor by eliminating unneeded movements. The word therblig was the creation of Frank Bunker Gilb...
   Found op http://en.wikipedia.org/wiki/Therblig
   
   
2. 
   therblig
   a unit of physical activity used in time-and-motion studies in industrial engineering. A therblig represents one of 18 standardized activities identified by the American industrial psychologists Frank B. Gilbreth (1868-1924) and Lillian Moller Gilbreth (1878-1972): search, find, select, grasp, hold,...
   Found op http://www.unc.edu/~rowlett/units/dictT.html
   
   

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