Definition of "relapsing fever" []

• Any of several infectious diseases characterized by chills and fever and caused by spirochetes transmitted by lice and ticks. Also called recurrent fever. (noun)

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.