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Webster's New World College Dictionary » occultation
occultation
occultation definition
oc·cul·ta·tion (äk′ul tā′s̸hən)
noun
- the state of becoming hidden or of disappearing from view
- Astron. the disappearance of a celestial body behind a closer, apparently larger celestial body
Etymology: ME occultacioun < L occultatio, a hiding < occultus: see occult
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