diminish (v)  DECREASE  IF THE HYDRAULIC PRESSURE DECREASES, CLOSE THE VALVE.  If the hydraulic pressure diminishes, close valve.
 DIMLY (adv)  Not bright  MAKE SURE THE LIGHT COMES ON DIMLY.  
 dip (v)  MOMENTARILY (adv)  PUT THE ELEMENT INTO THE SOLVENT MOMENTARILY.  Dip element in solvent.
 direct (v)  POINT  POINT THE OPEN END OF THE DRAIN HOSE AWAY FROM THE STRUCTURE.  Direct open end of drain hose away from structure.
 DIRECTION (n)  The line on which something moves or is pointed  THE ARROW ON THE VALVE BODY SHOWS THE DIRECTION OF THE FLOW.  
 DIRECTLY (adv)  In a "direct" procedure or by "direct" effect  DO NOT FILL THE SYSTEM DIRECTLY FROM A HIGH-PRESSURE STORAGE-CYLINDER.  
DIRTY (adj)
 (DIRTIER, DIRTIEST)  Not clean  A DIRTY CONTACT IN THE CONNECTION UNITS WILL CAUSE THEM TO OPERATE INCORRECTLY.  
 disappear (v)  GO OUT OF VIEW  THE HORIZONTAL BAR GOES OUT OF VIEW.  Horizontal bar disappears from window.
 DISARM (v),
 DISARMS, DISARMED, DISARMED  1. To remove armaments
 2. To prevent automatic operation  DISARM THE AIRCRAFT.
 DISARM THE LIFT DUMPER.  
 DISASSEMBLE (v),
 DISASSEMBLES, DISASSEMBLED, DISASSEMBLED  To "take" an assembly apart  DISASSEMBLE THE TELEFLEX ASSEMBLY.  
 DISCARD (v),
 DISCARDS, DISCARDED, DISCARDED  To not use again  REMOVE THE O-RINGS AND DISCARD THEM.  

 
 
 discharge (v)  RELEASE, GO  RELEASE THE PRESSURE FROM THE TANKS.  Discharge pressure from the tanks.