<p><strong>Noun</strong></p><ul><li>a supernatural appearance of a person or thing, especially a ghost; a specter or phantom; wraith: a ghostly apparition at midnight.</li><li>Synonyms: shade, spirit</li><li>anything that appears, especially something remarkable or startling: the surprising apparition of cowboys in New York City.</li><li>an act of appearing; manifestation.</li><li>Astronomy: the appearance or time when a comet, especially a periodic one, is visible: the 1986 apparition of Halley's comet.</li></ul>