S/F ratio

From SpO2/FiO2 ratio.
Etymology tree
Proto-Indo-European *per-der.
Ancient Greek περί (perí)
Ancient Greek περῐ- (perĭ-)
Proto-Indo-European *bʰer-
Proto-Indo-European *bʰéreti
Proto-Hellenic *pʰérō
Ancient Greek φέρω (phérō)
Ancient Greek περιφέρω (periphérō)
Proto-Indo-European *-os
Proto-Indo-European *-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-der.?
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
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