Definition of superinfect in US English:



  • 1with object Medicine. To infect (an already infected person or animal) with a different organism; to cause superinfection of. In early use also: to reinfect (now rare).

  • 2with object Virology. To infect (an already infected cell).


Early 20th century; earliest use found in Journal of Experimental Medicine. From super- + infect, after superinfection. Compare earlier superinfected.