Where does “quadrinomial” come from?

quadrinomial (English) comes from English quadri-, from Latin quattŭor, from Portuguese quarto, from Old Portuguese quarto, from Latin quārtus, from Proto-Indo-European kʷeturtos, from Proto-Indo-European kʷetwóres, from Proto-Indo-European kʷe- — and.

quadrinomial (English): Consisting of four names or parts or terms; An...

Definitions

Consisting of four names or parts or terms; An...

Ancestry of “quadrinomial”, step by step

Step	Language	Word	Meaning
1	English	quadri-	API; Four
2	Latin	quattŭor	four; 4
3	Portuguese	quarto	ordinal form of quatro; fourth; quarter; fourth;...
4	Old Portuguese	quarto	quarter
5	Latin	quārtus	fourth
6	Proto-Indo-European	kʷeturtos	—
7	Proto-Indo-European	kʷetwóres	four
8	Proto-Indo-European	kʷe-	and

Every word from Proto-Indo-European kʷe- →Every word from Proto-Indo-European kʷetwóres →Every word from Proto-Indo-European kʷeturtos →