occultation definition by Webster's New World
- the state of becoming hidden or of disappearing from view
- Astron. the disappearance of a celestial body behind a closer, apparently larger celestial body
Origin: Middle English occultacioun ; from Classical Latin occultatio, a hiding ; from occultus: see occult
occultation definition by American Heritage Dictionary
- The act of occulting or the state of being occulted.
- Astronomy a. The passage of a celestial body across a line between an observer and another celestial object, as when the moon moves between Earth and the sun in a solar eclipse.b. The progressive blocking of light, radio waves, or other radiation from a celestial source during such a passage.c. An observational technique for determining the position or radiant structure of a celestial source so occulted: a lunar occultation of a quasar.
Origin: Middle English occultacion, from Latin occultātiō, occultātiōn-, from occultātus, past participle of occultāre, frequentative of occulere, to conceal; see occult.
occultation - Science Definition