The act of obscuring or the state of being obscured; something that causes something else to be less visible or clear.
The obscuration of the sun during the eclipse was a breathtaking sight.
A condition in which something is hidden or not easily seen, often due to darkness or cloudiness.
The fog created an obscuration that made driving difficult.
Astronomy & Meteorology: the covering or blocking of a celestial body or the sky by another body or by atmospheric phenomena such as cloud, dust, or smoke; an eclipse or occultation.
During totality the obscuration of the Moon by Earth’s shadow turned the lunar surface a deep red.