ab·lu·tion (?-blo?o?sh?n, ?-blo?o?-)n.1. A washing or cleansing of the body, especially as part of a religious rite.2. The liquid so used.[Middle English ablucioun, from Latin abl?ti?, abl?ti?n-, from abl?tus, past participle of abluere, to wash away : ab-, away; see ab-1 + -luere, to wash; see leu(?)- in Indo-European roots.]ab·lu?tion·ar?y (-sh?-n?r??) 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.ablution (??blu???n) n1. (Ecclesiastical Terms) the ritual washing of a priest’s hands or of sacred vessels2. (often plural) the act of washing (esp in the phrase perform one’s ablutions)3. (Military) (plural) military informal a washing place[C14: ultimately from Latin abl?ere to wash away] ab?lutionary adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ab?lu?tion (??blu ??n) n. 1. a cleansing with water or other liquid, esp. as a religious ritual. 2. the liquid used. 3. a washing of the hands, body, etc. [1350?1400; Middle English