Acrity vs. Arity — What's the Difference?

(obsolete) sharpness; keenness

Arity ( (listen)) is the number of arguments or operands taken by a function or operation in logic, mathematics, and computer science. In mathematics, arity may also be named rank, but this word can have many other meanings in mathematics.

Sharpness; keenness.

The number of arguments or operands taken by a function or operator.

The number of arguments or operands a function or operation takes. For a relation, the number of domains in the corresponding Cartesian product.

The maximum number of child nodes that any node in a given tree (data structure) may have.

The number of arguments (in Lojban grammar called sumti) specified in the definition of a selbri. (the selbri combined with the sumti make up a bridi).