A Roman provincial governor, such as Sergius Paulus (Acts 13: 7) and Gallio (Acts 18: 12), appointed for one year by the senate.
Citation for proconsul
Citation styles are based on the Chicago Manual of Style, 15th Ed., and the MLA Style Manual, 2nd Ed..
MLA
"proconsul." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. Jun 19, 2013. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1531>.
Chicago
"proconsul." In A Dictionary of the Bible. , edited by W. R. F. Browning. Oxford Biblical Studies Online, http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1531 (accessed Jun 19, 2013).