[di-loot, dahy-; adj. also -dahy-loot] 
verb, -lut⋅ed, -lut⋅ing, adjective | 1. | to make (a liquid) thinner or weaker by the addition of water or the like. |
| 2. | to make fainter, as a color. |
| 3. | to reduce the strength, force, or efficiency of by admixture. |
| 4. | to become diluted. |
| 5. | reduced in strength, as a chemical by admixture; weak: a dilute solution. |
dilute di·lute (dī-l&oomacr;t', dĭ-)
v. di·lut·ed, di·lut·ing, di·lutes
To reduce a solution or mixture in concentration, quality, strength, or purity, as by adding water. adj.
Thinned or weakened by diluting.