PRI: Personal Record Identifier (Canada) PRI: Periodic Reinvestigation: PRI: Preliminary Rifle Instruction: PRI: Planning, Review, and Inspection: PRI: Progressive Routing Indicator (US DoD) PRI: Prisoner Reentry Initiative (various locations) PRI: Policy Research Institute (various locations)
Adding definition, to unite or join so as to increase the number, quantity, size, or importance: to add two cups of sugar; to add a postscript to her letter; to add insult to injury. See more. Dictionary.com
Definition of Addend. Addend is a mathematical term that refers to the numbers being added together in an addition problem.The word addend was first used in the early 1900's and comes from the Latin word 'addendus' which means 'to be added.'.nstructor: Jennifer Beddoe. In mathematics, an addend is any number that is added together in an addition problem. This lesson will define the term addend in greater detail, give some examples, and finish with a quiz to test your knowledge.