basis pointn. Abbr. BP One one-hundredth of a percent, used especially in measuring yield differences among bonds.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.basis point n (Economics) a measure used for describing interest rates, equal to one hundredth of a percentage point (0.01%) Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ba?sis point` n. 1/100 of one percent, as of interest rates or investment yields. [1965?70] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.