Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. Something apparently seen but having no physical reality; a phantom or an apparition. Also called phantasma.
- n. An illusory mental image. Also called phantasma.
- n. In Platonic philosophy, objective reality as perceived and distorted by the five senses.
Century Dictionary and Cyclopedia
- n. An apparition; a specter; a vision; an illusion or hallucination.
- n. An idea; a fancy; a fantastic notion.
- n. Specifically, in recent use, a phantom or apparition; the imagined appearance of a person, whether living or dead, in a place where his body is not at the same time.
- n. Synonyms Phantom, Apparition, etc. See ghost.
- n. In psychology: A memory-image.
- n. An image of imagination.
Wiktionary
- n. something seen but having no physical reality; a phantom or apparition.
GNU Webster's 1913
- n. An image formed by the mind, and supposed to be real or material; a shadowy or airy appearance; sometimes, an optical illusion; a phantom; a dream.
- n. A mental image or representation of a real object; a fancy; a notion.
WordNet 3.0
- n. a ghostly appearing figure
- n. something existing in perception only
Etymologies
- Middle English fantasme, from Old French, from Latin phantasma, from Greek, from phantazein, to make visible, from phantos, visible, from phainein, to show; see bhā-1 in Indo-European roots.
Examples
“All these we have included under the term phantasm; a word which, though etymologically a mere variant of phantom, has been less often used, and has not become so closely identified with visual impressions alone.”
“But I prefer to use the word phantasm as hinting the indefiniteness into which the Soul spills itself when it seeks to communicate with Matter, finding no possibility of delimiting it, neither encompassing it nor able to penetrate to any fixed point of it, either of which achievements would be an act of delimitation.”
“A notion which corresponds to our word concept was defined as a phantasm of the understanding of a rational animal.”
“Like the generality of people who are psychic and who have never had an experience of the superphysical, my conception of a phantasm was a "thing" in white that made ridiculous groanings and still more ridiculous clankings of chains.”
“Others (pardon me in tracing the institutions of learning and asserting that they were called phantasm, prejudice and blasphemy) have been heralding their pitifully and destructively ignorant doctrine, that the 'Africans spring of the monkey species;' that 'they became black from Ham, who had a curse from his father, Noah.”
“But visions and dreams, whether natural or supernatural, are but phantasms: and he that painteth an image of any of them, maketh not an image of God, but of his own phantasm, which is making of an idol.”
Leviathan, or, The matter, forme, & power of a common-wealth ecclesiasticall and civill
“Not so coincidentally also about the CIA, another 'phantasm' that you were deeply deluded about too.”
Heads up staffers, tips to avoid a Health Care "Town Hell" (Blog for Democracy)
“If there is no external cause, then the supposed object of the impression was a "phantasm," such as a figure in a dream, or the Furies whom Orestes sees in his frenzy.”
“Barrowvians, _i. e._ a grotesque kind of phantasm that frequents places where prehistoric man or beast has been interred; Planetians,”
“In my opinion there is very little doubt that dogs actually see some kind of phantasm that, knowing when death is about to take place, visits the house of the doomed and stands beside his, or her, couch.”
Lists
These user-created lists contain the word ‘phantasm’.
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G[r]eek
A collection of words found in English that are either purely Greek or have Greek etymology.
Please add with caution and certainty. Will be regularly updated by me.etymology, philosophy, laconic, disharmony, patriarchic, archaic, phlogiston, aether, aeon, angel, arachnid, rhythm and 322 more...
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®emovies
Movies or TV shows where the titles are also common words, generally one-word titles.
lost, alien, bug, elephant, siege, gladiator, flock, captivity, piano, roots, freaks, moonstruck and 269 more...
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ghost
This is Ghost List 2 ( the kind that go 'boo!' ) :P
phantom, spectral, specter, spectre, spooky, poltergeist, haunt, spirit, banshee, cryptic, shadow, phantasm and 294 more...
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Ends in "-sm" but isn't an "ism"
pleonasm, prism, schism, orgasm, spasm, iconoclasm, chasm, enthusiasm, phantasm, ectoplasm, cytoplasm, aneurysm and 55 more...

Louises When i woke, the wound had all but vanished, so that for the remaining days of the excursion i lived in fear that at best i'd suffered some sort of massive phantasm, at worst that i was completely losing my mind. From "The Last Werewolf" by Glen Duncan. Feb 25, 2012
haguremetaru Remember the first "The Animated Series" moov? Dec 9, 2006