An Etymological Dictionary of Astronomy and Astrophysics
English-French-Persian

The → absorption of → electromagnetic radiation from an astrophysical object by → dust grains associated with that object.

→ dust; → obscuration.

Tiregi, → obscuration, pat, → by; qobâr, → dust.

The fraction of the Sun's area occulted by the Moon. It should not be confused with → eclipse magnitude, which is the fraction of the Sun's diameter occulted by the Moon. Eclipse obscuration may be expressed as either a percentage or a decimal fraction (e.g., 50% or 0.50) (F. Espenak, NASA).

→ eclipse; obscuration, verbal noun from → obscure.

1) The act of obscuring.
2) The state of being obscured.

→ obscure; → -tion.