Where does “bifactorial” come from?

bifactorial (English) comes from English factorial, from English factor, from Middle French facteur, from Latin factor, from Latin faciō, from Latin -torium, from Latin -tōrius, from Latin -tor.

bifactorial (English): Of or pertaining to two factors

Definitions

  1. Of or pertaining to two factors

Ancestry of “bifactorial”, step by step

bifactorial traces back through two separate lines of ancestry.

via English factorial

StepLanguageWordMeaning
1EnglishfactorialThe result of multiplying a given number of...
2EnglishfactorA doer, maker; a person who does things for...
3Middle Frenchfacteur
4LatinfactorOne who or which does or makes something; doer,...
5Latinfaciōto do
6Latin-toriumnominative neuter singular of -tōrius; accusative...
7Latin-tōriusory
8Latin-tor-er
9Proto-Italic-tōrForms agent nouns to verb stems
10Proto-Indo-European-tōrDerives agent nouns from verbs, denoting someone...
11Proto-Indo-European-tor-s

via English bi

StepLanguageWordMeaning
1EnglishbiBisexual; A bisexual person; A type of jade disk...
2EnglishbicepsAny muscle having two heads; Specifically, the...
3Latinbicepsdouble-headed, having two heads; having two...
4Latinbistwice, two times, on two occasions, in two ways
5Latincolorcolour, shade; color; pigment; complexion
6Ancient Greekμέτρονsomething used to measure: measure, rule, weight;...
7Ancient Greek-τρονForms instrument nouns
8Proto-Hellenic-tronForms instrument nouns from verb stems
9Proto-Indo-European-tromForms nouns denoting a tool or instrument
10Proto-Indo-European-tḗrDerives agent nouns from verbs, denoting someone...
Every word from Proto-Indo-European -tor-sEvery word from Latin -toriumEvery word from Latin -tor