Dilution (noun)

1. The action of making a liquid weaker or a solution less concentrated, especially by adding water.
2. The reduction or weakening of the force, value, or strength of something.

Origin:

Mid 17th century: from latin dilutio(n-), from diluere "to wash away".

Examples:

1. The dilution of the orange juice with water made it less sweet.
2. The dilution of the stock with new shares will reduce the value of existing shares.
3. The dilution of the chemical solution with water was necessary to make it safe for use.
4. The dilution of the company's brand by selling low-quality products damaged its reputation.
5. The dilution of the vaccine's potency over time reduced its effectiveness.