discolor

A chemist for the Alcoa Aluminum Company doing research on discolored teeth to determine whether it was caused by aluminum discovered that the cause was fluoride, not aluminum.

“A lot of food we’ve been recommended since we’ve been here looks like this,” he said, showing pictures of several unappetizing, and what appeared to be soggy and discolored, foods.

If you're undertaking a home whitening process, sparkling water might discolor your teeth.

Most notably, in 2016, residents complained about discolored water pouring out of their faucets, with hues ranging from yellow to almost black.

Glasnow said his hand is discolored every time he throws off the mound, in a bullpen workout or a game, because he mixes rosin with a baseball that is rubbed in dirt.