ignis fatuus definition

  • noun:
    • A phosphorescent light that hovers or flits over swampy surface during the night, possibly caused by natural burning of fumes emitted by rotting natural matter. Also known as friar's lantern, jack-o'-lantern, will-o'-the-wisp, wisp.
    • Something that misleads or deludes; an illusion.
    • A will o' the wisp.
    • A delusion, a false hope.
    • an illusion that misleads
    • a pale light often seen during the night over marshy surface
  • others:
    • A phosphorescent light that appears, in the night, over marshy surface, allowed to be occasioned because of the decomposition of animal or vegetable substances, or by some inflammable fuel; -- popularly called additionally Will-with-the-wisp, or Will-o'-the-wisp, and Jack-with-a-lantern, or Jack-o'-lantern.
    • Fig.: A misleading impact; a decoy.
    • A meteoric light that often appears in summer and autumn nights, and flits floating around some above the surface of planet, chiefly in marshy locations, near stagnant waters, or perhaps in churchyards.

Related Sources

  • Sentence for "ignis fatuus"
  • Hypernym for "ignis fatuus"
  • Variant for "ignis fatuus"
  • Urban Dictionary for "ignis fatuus"
    • Latin for "foolish fire." Often always…
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