Source : Webster's Revised Unabridged Dictionary (1913)

Concurrently \Con*cur"rent*ly\, adv.
   With concurrence; unitedly.

Source : WordNet®

concurrently
     adv : overlapping in duration; "concurrently with the conference
           an exhibition of things associated with Rutherford was
           held"; "going to school and holding a job at the same
           time" [syn: {at the same time}]