Where does “fractional” come from?

Fractional derives from English fraction, which comes from Latin fractio, a noun formed from the root bʰreg- meaning to break.

fractional (English): Pertaining to a fraction; Divided; fragmentary;...

Definitions

  1. Pertaining to a fraction; Divided; fragmentary;...

Ancestry of “fractional”, step by step

fractional traces back through two separate lines of ancestry.

via English fraction

StepLanguageWordMeaning
1EnglishfractionA part of a whole, especially a comparatively...
2Middle Englishfracciouna breaking
3Occitanfracciona part; fraction
4Latinfractiothe action of breaking; fraction
5Latin-tiōtion, -ation, -ing
6Latindissertātiō(spoken) dissertation, discourse, disquisition
7Latindissertusarranged, disposed; explained
8Latindissereresecond-person singular future passive indicative...
9Latindis-asunder, apart, in two; reversal, removal;...
10Latincalceusshoe
11Latincalxlimestone; chalk; the finish line
12Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via French fractionnel

StepLanguageWordMeaning
1Frenchfractionnelfractional
2French-elTo make an adjectival form of a noun; -al
3Old French-elSuffix that usually denotes a masculine noun
4Latin-ellusAlternative form of -ulus; "forming masculine...
5Latin-ulusUsed to form a diminutive of a noun, indicating...
6Proto-Italic-olos
7Proto-Italic-elosForms desubstantival and deadjectival diminutive nouns
8Proto-Indo-European-e-lós
9Proto-Indo-European-lósForms agent nouns from verbal roots

Words derived from “fractional

Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-
fractional — Etymology, Origin & Word History | Etymology Explorer