the GNU version of the Collaborative International Dictionary of English
ad. At the same time with some other event.
The Century Dictionary and Cyclopedia
At the same time with some other person, thing, or event.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
ad. during the same period of time
Word Usage
"Furthermore, the CREW press release also noticeably omits the identification of the Maryland state candidates St. John "contemporaneously" contributed to in 2006."