Wordnet 3.0
ADVERB (1)
1.
during the same period of time;
- Example: "contemporaneously, or possibly a little later, there developed a great Sumerian civilisation"
The Collaborative International Dictionary of English v.0.48:
Contemporaneously \Con*tem`po*ra"ne*ous*ly\, adv.
At the same time with some other event.
[1913 Webster]
WordNet (r) 3.0 (2006):
contemporaneously
adv 1: during the same period of time; "contemporaneously, or
possibly a little later, there developed a great Sumerian
civilisation"