dys·men·or·rhe·a (d?s-m?n??-r???)n. Painful menstruation.[New Latin : dys- + Greek m?n, month; see m?- in Indo-European roots + -rrhea.]dys·men?or·rhe?al (-r???l), dys·men?or·rhe?ic (-r???k) adj.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.dys?men?or?rhe?a or dys?men?or?rhoe?a (?d?s m?n ??ri ?) n. painful menstruation. [1800?10] dys`men?or?rhe?al, adj. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.dysmenorrheaa condition of painful menstruation.See also: Disease and Illness-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.dysmenorrheaPainful menstruation usually caused by contraction of the uterus.Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited