I am part of an interdisciplinary field that combines sociology, cultural anthropology, linguistic anthropology, various bits of psychology, ecology, and philosophy.

But I wouldn't get into a conversation with a stranger and use terms like 'hyperbilirubinemia' or 'myelomeningocele' without explaining them first.

I wouldn't either, but when someone tells you that you don't know what the word you are using means you expect them to be pretty well informed on the subject.