1. The immediate finishing or accomplishment of a task, process, or transaction without delay
The software update requires instantaneous completion before the system can restart.
A atualização de software requer conclusão instantânea antes que o sistema possa reiniciar.
2. In legal or commercial contexts, the finalization of a transaction or contract at the exact moment of agreement
The instantaneous completion of the real estate deal was finalized with digital signatures.
A conclusão instantânea da negociação imobiliária foi finalizada com assinaturas digitais.