An animal having a lighter-coloured coat than is usual.
"The litter of kittens included two dilute calicos, their fur appearing as a soft blue-grey instead of the typical black and white pattern."
corrupt, debase, or make impure by adding a foreign or inferior substance; often by replacing valuable ingredients with inferior ones
"adulterate liquor"
To make thinner by adding solvent to a solution, especially by adding water.
"She added too much water and had to start over because she accidentally diluted the lemonade concentrate."
Having a low concentration.
"The diluted solution was so weak that it failed to react with the sample."