Is there a word like "unary" meaning "consisting of *more than one* element"?

Unary means "consisting of one element"; is there a word meaning "consisting of more than one element"?

Poly-ary sounds wrong, as does mult-ary...

What is the opposite (in this sense) of unary?

• Simply "non-unary"? ai.stanford.edu/~koller/Papers/Grove+al:96a.pdf Aug 12, 2016 at 23:04
• @Yee-Lum: But non-unary allows for nullary (niladic) also. The OP apparently wants n-ary where n > 1.
– Drew
Aug 12, 2016 at 23:09
• That's true. The title and body seem to be asking slightly different questions, in that case. Aug 12, 2016 at 23:13
• @Yee-lum I don't think opposite has such a concrete definition, so I clarified exactly which opposite I meant in the body. Aug 13, 2016 at 1:28
• "Plurality" technically fits, but has acquired conflicting meanings over the ages. Nov 12, 2017 at 22:38

The word plurarity does not appear in the dictionary, but if you google it there are quite a few cases of it being used this way.

While plur- is a valid Latin prefix, English words using it usually start with plural-, pluralism for instance.

So I suppose it could be seen as a portmanteau of plural and arity.

In that same sense, a word for n-arity > 1, could be plurary.

• This is a noun, not an adjective, though for that matter, I'm pretty sure simple plural fits the bill. Nov 13, 2017 at 1:51
• @MichaelChirico The word I'm recommending is plurary. See the last sentence. Nov 13, 2017 at 1:53
• Let's just hope the rural juror never has to use that word Nov 13, 2017 at 1:58
• @SamWashburn I missed that detail. It's a horrible word, but plurality is in the dictionary. Nov 13, 2017 at 9:50

You can use multiple-arity if different numbers of arguments are accepted (e.g. a polymorphic function/method), or n-ary if you want to be indefinite about the arity. But I don't know of a term for arity > 1.