*n-*adic (*Of an operator*) Having exactly *n* operands; i.e., being defined in terms of exactly *n* parameters (*n* 0). *Note*: Let *Op* be a dyadic operator. If we want to define an *n*-adic version of *Op*, then it's necessaryat least if that *n*-adic version is intended to apply to a set, as opposed to a sequence, of operandsthat *Op* be both commutative and associative. Examples of such operators defined in this dictionary include (a) the logical operators AND, EQUIV, OR, and XOR and (b) the relational operators intersect, join, product, and union.

**n-ary** (Of a heading, key, tuple, tuplevar, relation, or relvar) Of degree n (n 0).

*n-*place (*Of a predicate*) Same as *n*-adic (*n* 0).

*n*-tuple A tuple of degree *n* (*n* 0).

**NAND** In logic, a dyadic connective (also ...