Unire

Unire is a common Italian verb meaning to join, unite, or connect. It is used for physical joins as well as figurative ones, for example unire due elementi, unire le forze, or unire paesi in a federation. The verb also appears in technical contexts such as merging data sets or files. In English, its cognates include unite, unir, and unir.

Etymology and related forms: Unire derives from Latin unire, itself from a proto-Romance root related to one (unus) and unity. It has cognates in other Romance languages, such as unir in Spanish and unir in French. In Italian, unire is transitive and takes a direct object.

Conjugation and usage notes: Unire is a regular -ire verb with the special present-tense form isc in all persons. Example: io unisco, tu unisci, lui/lei unisce, noi uniamo, voi unite, loro uniscono. The passato prossimo is formed with avere and the participle unito: ho unito. The modal and future forms follow the standard -ire pattern: unirò, unirai, unirà, uniremo, unirete, uniranno. The present subjunctive uses unisca, unisca, unisca, uniamo, uniate, uniscano; the imperative is unisci, unisca (Lei), uniamo, unite, uniscano. The gerund is unendo and the past participle is unito.

See also: Unire is often contrasted with unificare (to unify) and unione (union). In mathematics and computing, unire is commonly used for to merge or combine elements, sets, or data.