/nɪɡrɛsˈsɪt/ (nig-res-SEE-t)

Definitions

1. verb

to become or cause to become darkened or discolored, especially by oxidation or the action of air

“The iron began to nigresce as it was left exposed to the elements.”

2. verb

to grow or become dark in color, especially as a result of chemical action or oxidation

“The cut on her skin nigresced over the course of several days.”