additionare

Additionare is a term used in some mathematical and computational texts to denote the act or process of adding. It can function as a verb meaning to perform addition and, less commonly, as a noun referring to the operation itself. The word is not standard in major dictionaries and is considered a neologism or localized usage in several Romance-language contexts, often derived from Latin additio meaning addition, with a Romance suffix -are to form verbs.

In mathematics, additionare describes a binary operation that combines two elements to yield a sum or a larger composed element. When defined on a set with a compatible structure, it may be associative and commutative and may have an identity element, depending on the algebraic system (for example, natural numbers under ordinary addition). In other contexts, additionare is used informally to emphasize the act of summing rather than the abstract properties of the operation.

In computing and data processing, additionare is commonly used to mean element-wise summation of sequences, vectors, or matrices, or the aggregation of numeric fields across records. For example, additionare vectors v and w yields a vector whose components are v[i] + w[i].

Usage notes: Because additionare is not standardized, its precise meaning can vary by author or field. When introducing the term, it is advisable to define the operation explicitly. See also: addition, summation, binary operation, monoid, vector addition.