pronunciation - Is there a word or term to describe mispronouncing a word due to someone else's accent?

In college, I had a Japanese linear algebra teacher who was not a native English speaker. The subject matter was new and difficult, so with new terminology to learn, it was sometimes to difficult for my classmates and me to understand certain words through his accent, mainly because they were new words that we had not heard before, or heard in proper context. Also, just like most of my college professors, he didn't have the neatest handwriting on the whiteboard.

So the one I will always remember is a "Arfa". It was just a squiggally unfamiliar symbol on a whiteboard, some new mathematical entity called Arfa, no big deal. Eventually, we came to learn that this was the greek letter "alpha," but there were a few classes where several members of the class were referring to it as Arfa because that's what we understood that symbol to be called. Eventually, someone figured out that it was the letter "alpha" and we called it that from then on.

So, is there a word or term for this type of mispronunciation? (Not the professor's, but the students' mispronunciation)

Answer

I don't believe there is a specific term that describes the act of unknowingly mispronouncing a word due to somebody's foreign accent.

There are hundreds of examples where words are mispronounced by native speakers because they are unaware of the word's pronunciation. Forte is perhaps one of the best known. It can be pronounced in three different ways: /ˈfɔː.teɪ/, /fɔːt/ and /ˈfɔːr-/. The first is so commonly heard that it has practically superseded the original French pronunciation (the third). When a mistake is heard, learnt and then repeated, ESL teachers call it a fossilized error or fossilization.

Sometimes a learner’s grammatical development appears to have stopped at a certain level and recurring errors of both grammar and pronunciation have become permanent features of a learner’s speech. This is referred to as fossilization. Fossilization refers to the persistence of errors in a learner’s speech despite progress in other areas of language development. [. . .] Since fossilized errors do not generally trigger misunderstanding and hence do not prompt a clarification request from the listener, the learner may simply never notice them or be aware that they are there.

Since mathematics is often referred to as a language, mistakes in its grammar and pronunciation can be internalised by the students, especially if it is learnt through the teacher.