obscuration

But when the true shadow begins to touch, the obscuration will have become annular or total near the pole where it first appeared.

The maximum observed obscuration during this eclipse was no more than 4m.

They were wholly ignorant that any sudden effect would follow the total obscuration of the Sun.

That the outcome will be illumination of his fame rather than obscuration, his unswerving defenders do not doubt.

It seized upon defects with the unerring instinct of a born critic, and dilated upon them to the obscuration of all virtues.