1. a substance or agent that dilutes; something that makes a liquid or mixture weaker or thinner by adding another substance
2. a person or thing that dilutes or weakens the strength, effect, or quality of something
Usage: figurative

Examples

• Water is a common diluter used in many industrial processes.
• The paint diluter helped thin the mixture to the right consistency.
• Adding too much diluter to the solution reduced its effectiveness.
• The new policy was seen as a diluter of the original standards.
• Solvent acts as a diluter in chemical applications.