The word "nonsurface" means something that is not on the surface. When we look at the spelling of this word, we can see that it starts with the prefix "non-" which means "not". The remaining part of the word is "surface", which refers to the uppermost layer of something. The phonetic transcription of this word is /nɑn' sər fəs/. When we break down the word phonetically, we can see that it comprises three syllables - "non", "sur" and "face".