cause something to be made, done or happen again. As it relates to study and communication, duplication is used to describe the action of reproducing something exactly. For example, if Person A communicated the concept of a cat to Person B and Person B got the exact sameconcept of a cat without any alteration, Person B would be said to have duplicated what was originated by Person A. —Games Congress Gls (Approved 13.8.92)