I looked on Oxford's online dictionary and was able to find the names identifying orders of a given degree:

1. primary
2. secondary
3. tertiary
4. quaternary
5. quinary
6. senary
7. septenary
8. octonary
9. nonary
10. denary
11. -- no term for 11th degree??
12. duodenary

I am curious as to what would be the sequence of terms regarding a set of 'n' items? I have up to four:

1. unary
2. binary
3. ternary
4. quaternion

but I cannot seem to find anything beyond that. Does anyone know where this list may be?