[dih-loot, dahy-; adjective dahy-loot]
- to make (a liquid) thinner or weaker by the addition of water or the like.
- to make fainter, as a color.
- to reduce the strength, force, or efficiency of by admixture.
- to become diluted.
- reduced in strength, as a chemical by admixture; weak: a dilute solution.
Origin of dilute
1545–55; < Latin dīlūtus washed away, dissolved (past participle of dīluere), equivalent to dī- di-2 + -lūtus, combining form of lautus (lav(ere) to wash + -tus past participle suffix)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- to make or become less concentrated, esp by adding water or a thinner
- to make or become weaker in force, effect, etche diluted his story
- (of a solution, suspension, mixture, etc) having a low concentration or a concentration that has been reduced by admixture
- (of a substance) present in solution, esp a weak solution in waterdilute acetic acid
C16: from Latin dīluere, from dis- apart + -luere, from lavāre to wash
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
Word Origin and History for undilute
1550s, from Latin dilutus, past participle of diluere "dissolve, wash away, dilute," from dis- "apart" + -luere, comb. form of lavere "to wash" (see lave). Related: Diluted; diluting. As an adjective from c.1600.
Online Etymology Dictionary, © 2010 Douglas Harper
- To reduce a solution or mixture in concentration, quality, strength, or purity, as by adding water.
- Thinned or weakened by diluting.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.