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avianize

American  
[ey-vee-uh-nahyz] / ˈeɪ vi əˌnaɪz /
especially British, avianise

verb (used with object)

Microbiology.
avianized, avianizing
  1. to diminish the infectivity of (a virus) by repeated culturing in chick embryos.


Etymology

Origin of avianize

avian + -ize