This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A ghostly figure; a specter.

n. A sudden or unusual sight: "[The designer's] indoor-outdoor reversals and juxtapositions call forth a Magritte apparition beneath a Miami moon” ( Herbert Muschamp).

n. The act of appearing; appearance.

n. An act of becoming visible; appearance; visibility.

n. The thing appearing; a visible object; a form.

n. An unexpected, wonderful, or preternatural appearance; especially something such as a ghost or phantom.

n. The first appearance of a star or other luminary after having been invisible or obscured;—opposed to occultation.

n. The act of becoming visible; appearance; visibility.

n. The thing appearing; a visible object; a form.

n. An unexpected, wonderful, or preternatural appearance; a ghost; a specter; a phantom.

n. The first appearance of a star or other luminary after having been invisible or obscured; -- opposed to occultation.

n. The act of appearing or coming into sight; appearance; the state of being visible; visibility.

n. That which appears or becomes visible; an appearance, especially of a remarkable or phenomenal kind.

n. Specifically A ghostly appearance; a specter or phantom: now the usual sense of the word.

n. In astronomy, the first appearance of a star or other luminary after having been obscured: opposed to occultation.

To cause to to appear in phantom form.

n. a ghostly appearing figure

n. something existing in perception only

n. an act of appearing or becoming visible unexpectedly

n. the appearance of a ghostlike figure

"These aren't pluralizations, which should be obvious from the examples. (e.g. the plural of apparition is apparitions.)"

occultation   

appearance   

appearance    of perpetual apparition    circle of apparition   

appearance    visibility    form    ghost    specter    phantom    vision   

Deposition    Inquisition    Prohibition    Titian    abolition    academician    acquisition    addition    admission    admonition   

revelation    spectacle    vision    ghost    visitation    radiance    manifestation    procession    portent    occurrence