The Collaborative International Dictionary
Contemporaneously \Con*tem`po*ra"ne*ous*ly\, adv. At the same time with some other event.
Wiktionary
adv. In the same period of time.
WordNet
adv. during the same period of time; "contemporaneously, or possibly a little later, there developed a great Sumerian civilisation"
Usage examples of "contemporaneously".
At the outset, instead of appearing contemporaneously upon the scene, like the four children of Horus, the four Heliopolitan gods were deduced one from another, and succeeded each other in the order of their birth.
In this way they could, and very likely did, occupy parts of Wales contemporaneously with their conquerors, who, through marriage, became connected with the mild race, whom they found in possession of the land.
Is the Arethousan gloss written contemporaneously with the original, or was it glossed later?
We find from their own writings that these men prophesied contemporaneously.
Anon a woolly rhinoceros, resembling the Rhinoceros tichorhinus that existed contemporaneously on earth with the mammoth, came to drink the water that had partly cooled.