Ghosts or apparitions; something that exists only in one's mind or imagination. Illusive or elusive things that appear real but are not.
From Old French fantosme, from Latin phantasma, from Greek phantasma meaning 'image' or 'phantom,' derived from phantazein 'to make visible.' The Greek root phan- means 'to show' or 'to appear,' connecting to phenomena and fantasy.
The medical term 'phantom limb syndrome,' where amputees feel sensations in missing limbs, reveals how our word 'phantom' captures something profound about consciousness - the persistence of neural patterns even when physical reality changes. Ancient Greeks used the same root to describe both supernatural apparitions and the images we see in our minds, suggesting they understood that perception itself can be phantom-like.
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