I searched and the only useful explanation i found:
N-ary:
Nullary means 0-ary.
Unary means 1-ary.
Binary means 2-ary.
Ternary means 3-ary.
Quaternary means 4-ary.
Quinary means 5-ary.
Senary means 6-ary.
Septenary means 7-ary.
Octary means 8-ary.
Nonary means 9-ary.
Hope this helps.