If something droops, it hangs or leans downwards with no strength or firmness. Crook's eyelids drooped and he yawned Droop is also a noun. the droop of his shoulders
A common occurrence in time-proportional controllers It refers to the difference in temperature between the set point and where the system temperature actually stabilizes due to the time-proportioning action of the controller
The decrease in outlet pressure of a pressure regulator which results from an increase in flow rate Essentially the reverse of lockup
The measure of shock droop is the amount of uptravel the chassis will have if you weigh the car with its full running gear (servo, batteries, motor, etc ), settle the chassis (press down and release on the chassis), then lift each end until the tires lift off the ground The total upward movement of the chassis at each end is measured as droop