A voiceless bilabial affricate ([p͡ɸ] in IPA) is a rare affricate consonant that is initiated as a bilabial stop [p] and released as a voiceless bilabial fricative [ɸ]. It has not been reported to occur phonemically in any language.
Features
Features of the voiceless bilabial affricate:
References
Voiceless bilabial affricate Wikipedia(Text) CC BY-SA