Arity

nr.	Latin	Greek	Note
argc	Arity	Adicity	number of args
n	n-ary	n-adic
0	nullary	niladic	medadic, zeroadic
1	unary	monadic
2	binary	dyadic
3	ternary	triadic
4	quaternary	tetradic
5	quinary	pentadic
6	senary	hexadic
7	septenary	heptadic
8	octonary	ogdoadic
9	novenary	enneadic
10	denary	decadic
11	undenary	endecadic
12	duodenary	dodecadic
20	vigenary	icosadic
many		polyadic	more then 1
(...)		variadic

Arity: nullary (0), unary (1), binary (2), ternary (3), quaternary (4), quinary (5), senary (6), septenary (7), octonary (8), novenary (9), denary (10)

Adicity: 0 niladic, 1 monadic, 2 dyadic, 3 triadic, 4 tetradic, 5 pentadic, 6 hexadic, 7 heptadic, 8 octadic, 9 enneadic, 10 decadic

unsorted

nonary

• relating to or based on the number 9

• from Latin nōnus ninth

  nonarius from

duadic nonadic k-adic p-adic

Tuples

solitary double, pair triple, triplet quadruple quintuple sextuple (hextuple) septuple (heptuple)

Folds

twofold, duplicate threefold, triplicate fourfold fivefold sixfold sevenfold

novemdecillion (US) 1 followed by 60 zeros, (UK) 1 followed by 114 zeros

References

https://en.wiktionary.org/wiki/Appendix:English_arities_and_adicities https://en.wikipedia.org/wiki/Numeral_prefix https://en.wikipedia.org/wiki/Binary_prefix https://en.wikipedia.org/wiki/Metric_prefix https://en.wikipedia.org/wiki/Demi_(disambiguation) https://en.wikipedia.org/wiki/Deca-_(prefix) https://en.wikipedia.org/wiki/Dera https://en.wikipedia.org/wiki/Meta https://en.wikipedia.org/wiki/Entero https://en.wikipedia.org/wiki/-phil- https://en.wikipedia.org/wiki/Pseudo- https://en.wikipedia.org/wiki/Numeral_prefix#semi https://en.wikipedia.org/wiki/Unit_prefix

https://en.wikipedia.org/wiki/Category:IEC_prefixes https://en.wikipedia.org/wiki/Category:SI_prefixes https://en.wikipedia.org/wiki/Category:Mathematical_prefixes https://en.wikipedia.org/wiki/Category:Function_prefixes https://en.wikipedia.org/wiki/Category:Metric_prefixes https://en.wikipedia.org/wiki/Category:Metric_double_prefixes