Where does “sexenary” come from?

sexenary (English) comes from Latin sēnārius, from Latin -ārius, from Proto-Italic *-āzios — Forms relational adjectives to nouns (and rarely numerals).

sexenary (English): Proceeding by sixes or in a base of six; sextuple

Definitions

Proceeding by sixes or in a base of six; sextuple

Ancestry of “sexenary”, step by step

Step	Language	Word	Meaning
1	Latin	sēnārius	containing or consisting of six things
2	Latin	-ārius	er
3	Proto-Italic	*-āzios	Forms relational adjectives to nouns (and rarely numerals)

Every word from Proto-Italic *-āzios →Every word from Latin -ārius →Every word from Latin sēnārius →