Dictionary.com
Thesaurus.com

Mann-Whitney test

British  
/ ˈmænˈwɪtnɪ /

noun

  1. Also called: Wilcoxon Mann-Whitney test.  a statistical test of the difference between the distributions of data collected in two experimental conditions applied to unmatched groups of subjects but comparing the distributions of the ranks of the scores

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012