S/F

See also: Appendix:Variations of "sf"

English

Etymology

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

Noun

S/F (plural S/Fs)

1. Ellipsis of S/F ratio.