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adj. Abbr. fps
Of, relating to, or characteristic of the US Customary and British Imperial systems of measurement based on the foot, the pound, and the second as the fundamental units of length, mass, and time.
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.
(Units) See fps units
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
of or pertaining to the system of units in which the foot, pound, and second are the principal units of length, mass, and time. Abbr.: fps
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.