olemus
üks ajalise kattuvuse vorme

ISO/IEC 2382:
sellisesse ajastusse puutuv, mille puhul
samas ajavahemikus toimub
mitu ühe protsessi sündmust,
näiteks sisend-väljundoperatsiooni,
ja igaüht neist käsitleb eraldi funktsionaalüksus
= in a process, pertaining to two or more events that occur within the same interval of time, each event handled by a separate functional unit
Example. In the execution of one or more programs, several input-output operations handled by input-output channels, input-output controllers and associated peripheral equipment, may be simultaneous with one another, and with other operations handled directly by the processing unit.

ISO/IEC/IEEE 24765:
mitme sündmuse samal hetkel toimumisse puutuv
= pertaining to the occurrence of two or more events at the same instant of time

vt ka
- konkurentne
- paroolisimultaan
- rööpne
- simultaankontakt
- simultaanotsing
- simultaanteenindus
- simultaanvõrdlus