Definition of niggling for English Language Learners. : causing you to feel a slight pain or to be worried or annoyed for a long time.
What is PPAP? The Production Part Approval Process (PPAP) is a standardized process in the automotive and aerospace industries that helps manufacturers and suppliers communicate and approve production designs and processes before, during, and after manufacture.
What is CPAP? What is CPAP? CPAP refers to âcontinuous positive airway pressureâ, a treatment procedure that utilizes a mild form of air pressure to help those with breathing difficulties. This procedure may be administered to adults to keep their airways open and to babies who are born prematurely.