Definition of "bimestrial" []

• Occurring every two months; bimonthly. (adjective)
• Lasting two months. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "(June, 1300), -- an office which the Florentines had made bimestrial in its tenure, in order apparently to secure at least six constitutional chances of revolution in the year."
• "Help-online (i.e. videoconference) requests and payments are made at the beginning of the month on monthly (bimestrial, 3 -, 4 -, 6 -, 12-months) base."