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A Greek phi, for air forced between the lips.
Also known as: ɸ, Latin phi
In the International Phonetic Alphabet the letter phi denotes a voiceless bilabial fricative, made by forcing air through a narrow gap between the two lips without vocal-fold vibration. It is not the same as an f, which uses lip and teeth.
Denotes a voiceless bilabial fricative, produced by turbulent airflow between the lips alone.
Contexts: Language and transcription
Differs from the labiodental f in using both lips rather than lip and teeth, a contrast made in Japanese, Ewe and a number of other languages.
Contexts: Language and transcription
A tall vertical stroke passing through a closed oval, the Greek letter phi in its unlooped printed form.