0 past simple and past participle of blacken
2 to spoil someone's reputation:
Even though the inner chamber walls have been blackened, about 20% of the acquired light intensity is originated by this reflection.
In damage type 10, an undamaged zone within the forewing marginal rubbed area is shown blackened to emphasize its shape.
They were blackened with grime, and their conditions of work caused major health problems.
Each of the other two bore a flower, once red but now blackened.
The tibiae and tarsi are yellowish but may be blackened, more so in the hind tibiae of the female.
Values represented by a blackened circle are less than 2%.
The blackened region shows the area over which the full cortical thickness was lesioned.
A piece of reindeersinew thread is blackened with soot, and is then drawn under and through the skin by means of a needle.
