dilution

Short definition from Wiktionary

Noun

1. 1
   The process of making something dilute.
2. 2
   A solution that has had additional solvent, such as water, added to it into order to make it less concentrated.
3. 3
   The process of bringing in unskilled workers to replace skilled ones, for example during wartime.
4. 4
   Ellipsis of share dilution.
5. 5
   Ellipsis of trademark dilution.