s/f

Questions

What does s/f mean?

Ellipsis of S/F ratio.

Where does s/f come from?

From S/F ratio. Etymology tree Proto-Indo-European *per-der. Ancient Greek περί (perí) Ancient Greek περῐ- (perĭ-) Proto-Indo-European *bʰer- Proto-Indo-European *-eti Proto-Indo-European *bʰéreti Proto-Hellenic *pʰérō Ancient Greek φέρω (phérō) Ancient Greek περιφέρω (periphérō) Proto-Indo-European *-os Proto-Indo-European *-ēs Proto-Hellenic *-ēs Ancient Greek -ης (-ēs) Ancient Greek -ής (-ḗs) Ancient Greek περιφερής (peripherḗs) Proto-Indo-European *-is Proto-Indo-European *-h₂ Proto-Indo-European *-ih₂der. Ancient Greek -ια (-ia) Ancient Greek περιφέρεια (periphéreia)bor. Latin peripheriabor. Middle French peripheriebor. English peripher(y) Proto-Indo-European *h₂el- Proto-Indo-European *-is Proto-Indo-European *h₂élisder.? Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al English -al English peripheral Proto-Indo-European *h₂eḱ-der.? Ancient Greek ὀξύς (oxús) Proto-Indo-European *ǵenh₁- Proto-Indo-European *-os Proto-Indo-European *ǵénh₁os Proto-Hellenic *génos Ancient Greek γένος (génos) French oxygènebor. English oxygen Late Latin saturatiobor. English saturation English peripheral oxygen saturation English SpO2 Old French fraccionbor. Middle English fraccioun English fraction Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Germanic *ab Proto-West Germanic *ab Old English æf Old English of Middle English of English of English inspired ▲ English oxygen English FiO2 English ratio English SpO2/FiO2 ratio English S/F ratio English S/F

How to pronounce s/f

1. Open the pronunciation page — Open the Speakur entry for “s/f”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “s/f”.
4. Repeat and practice — Say “s/f” aloud, matching stress and vowels until it feels natural.