photism

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English[edit]

Etymology[edit]

From the stem of Ancient Greek φῶς (phôs, light) + -ism.

Pronunciation[edit]

Noun[edit]

photism (plural photisms)

  1. (psychology) A luminous appearance, image or subjective perception of a hallucinatory nature.
    • 1902, William James, The Varieties of Religious Experience, Folio Society 2008, p. 214:
      I refer to hallucinatory or pseudo-hallucinatory luminous phenomena, photisms, to use the term of the psychologists.
  2. The color that a synesthete may report seeing in association with a particular letter or number.

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