noun

• The process of making something dilute.
• A solution that has had additional solvent, such as water, added to it into order to make it less concentrated.
• The process of bringing in unskilled workers to replace skilled ones, for example during wartime.
• (finance) Short for share dilution. [(finance) The loss in value of the shares of a company or a lowering of someone’s stake in it resulting from the issuance of new shares.]
• (copyright law) Short for trademark dilution. [(copyright law) The use of an image, sign, expression, etc. sufficiently close to one that is trademarked that it causes confusion ("blurs") about or brings disrepute ("tarnishes") to the trademarked item.]