nonrange

Nonrange is a term used across several technical disciplines to describe elements that do not belong to a defined interval or range. It is not a formal, universally standardized concept, but rather a descriptive label for the complement of a range or for values that fall outside permitted bounds.

In data validation, nonrange checks verify that input values lie outside a specified interval. For example, if a valid age is 0 to 120, a nonrange validation would flag values less than 0 or greater than 120 as invalid.

In constraint programming and formal methods, a nonrange constraint may specify that a variable's value must avoid a forbidden interval, effectively restricting the solution space to the complement of that interval. In some formulations, nonrange sets are defined as the universal domain minus the range.

In databases and query languages, nonrange conditions are expressed with operators such as NOT BETWEEN or with less-than/greater-than comparisons to retrieve records outside a specified interval.

In data analysis and visualization, nonrange data may be treated as outliers or highlighted separately to indicate nonconforming observations relative to the analyzed range.

Because “nonrange” is not standardized, its precise meaning depends on context, and it may be replaced with terms like “out of range,” “outside the interval,” or “complement of a range” in technical writing.

See also: range; out of range; complement; constraint; data validation.