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.
CNAP, Certified Nonprofit Accounting Professional, is a copyright-protected national program developed by the National Association of Nonprofit Accountants & Consultants (NPAC), a division of The Alliance of Professional Associations (APA).