Oxford Dictionary English cross-infection nounnoun BrE BrE//ˈkrɒs ɪnfekʃn// ; NAmE NAmE//ˈkrɔːs ɪnfekʃn// [uncountable] (medical) Add to my wordlistjump to other resultsan occasion when somebody passes an infection to somebody who has a different infection The hospital is taking measures to reduce the risk of cross-infection.Check pronunciation: cross-infection oxfordlearnersdictionaries.com