Pronunciation Respelling
A pronunciation spelling is an ad hoc spelling of a word that has no standard spelling. Most are nonce coinages, but some have become standardised, e.g. gonna to represent the pronunciation of going to, as in I'm gonna catch you. A pronunciation respelling is a regular phonetic respelling of a word that does have a standard spelling, so as to indicate the pronunciation. Pronunciation respellings are sometimes seen in dictionaries.
Read more about Pronunciation Respelling: Respelling, Literary Dialect, Other Uses