Search Result for "dilution": 
Wordnet 3.0

NOUN (2)

1. a diluted solution;

2. weakening (reducing the concentration) by the addition of water or a thinner; 



The Collaborative International Dictionary of English v.0.48:

Dilution \Di*lu"tion\, n. [Cf. F. dilution.]
   The act of diluting, or the state of being diluted.
   --Arbuthnot.
   [1913 Webster]


WordNet (r) 3.0 (2006):

dilution
    n 1: a diluted solution
    2: weakening (reducing the concentration) by the addition of
       water or a thinner [ant: concentration]