Definition of non-A non-B in English:

non-A non-B

adjective

Medicine
  • Not caused by or associated with the hepatitis A and B viruses; (originally) specifically designating the type of viral hepatitis that was subsequently identified as hepatitis C.

Origin

1970s; earliest use found in The Lancet. From non- + A + non- + B.

Pronunciation

non-A non-B

/nɒnˌeɪ nɒnˈbiː/