Where does “ventisei” come from?

ventisei (Italian) comes from Italian venti, from Late Latin vĭnti, from Latin vīgintī, from Latin quīnque, from Proto-Italic kʷenkʷe, from Proto-Indo-European pénkʷe — five.

ventisei (Italian): twenty-six

Definitions

twenty-six

Ancestry of “ventisei”, step by step

ventisei traces back through two separate lines of ancestry.

via Italian venti

Step	Language	Word	Meaning
1	Italian	venti	twenty; plural of vento
2	Late Latin	vĭnti	—
3	Latin	vīgintī	twenty
4	Latin	quīnque	five; 5
5	Proto-Italic	kʷenkʷe	five
6	Proto-Indo-European	pénkʷe	five

via Italian sei

Step	Language	Word	Meaning
1	Italian	sei	six; second-person singular indicative present of...
2	Latin	sex	six; 6
3	Proto-Italic	seks	six
4	Proto-Indo-European	swéḱs	six

Words derived from “ventisei”

ventiseienne

Every word from Proto-Indo-European pénkʷe →Every word from Proto-Italic kʷenkʷe →Every word from Latin quīnque →