Etymology
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occultation (n.)

early 15c., occultacioun, "disguise or concealment of identity," from Latin occultationem (nominative occultatio), noun of action from past-participle stem of occultare "to hide, conceal," frequentative of occulere "to cover over, conceal" (see occult).

updated on August 07, 2019

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Definitions of occultation from WordNet

occultation (n.)
one celestial body obscures another;
Synonyms: eclipse
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.