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From earlier *egni, *igni, dissimilated from *engni, *ingni, from Proto-Indo-European *h₁n̥gʷnis ‎(fire). Cognate with Sanskrit अग्नि ‎(agní), Hittite 𒀀𒀝𒉌𒅖 ‎(akniš) (an Indo-Iranian borrowing), Old Church Slavonic огнь ‎(ognĭ) and Old Prussian ugnis.



ignis m ‎(genitive ignis); third declension

  1. fire
    • ferro ignique.
      With iron and [with] fire.
    • 29–19 BCE, Virgil, Aeneid, 8.420
      striduntque cauernis / stricturae Chalybum et fornacibus ignis anhelat
      Chalybian ores hiss in the caverns, and from the furnace mouths puff the hot-panting fires


Third declension, alternative ablative singular in and accusative plural in -īs.

Case Singular Plural
nominative ignis ignēs
genitive ignis ignium
dative ignī ignibus
accusative ignem ignēs
ablative igne
vocative ignis ignēs

Derived terms[edit]



  • ignis in Charlton T. Lewis & Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
  • ignis in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
  • IGNIS in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
  • ignis” in Félix Gaffiot (1934), Dictionnaire Illustré Latin-Français, Paris: Hachette.
  • Meissner, Carl; Auden, Henry William (1894) Latin Phrase-Book[1], London: Macmillan and Co.
    • to light, make a fire: ignem facere, accendere
    • to set fire to houses: ignem tectis inferre, subicere
    • to take fire: ignem concipere, comprehendere
    • to make up, stir up a fire: ignem excitare (pro Mur. 25. 51)
    • to keep up a fire: ignem alere
    • to perish in the flames: igni cremari, necari
    • to raise an alarm of fire: ignem conclamare
    • the wind spread the conflagration: ventus ignem distulit (B. G. 5. 43)
    • an eruption of Etna: eruptiones ignium Aetnaeorum
    • Vesuvius is discharging flame: Vesuvius evomit (more strongly eructat) ignes
    • to threaten with fire and sword: minitari alicui igni ferroque (Phil. 13. 9. 21)
    • to proscribe a person, declare him an outlaw: aqua et igni interdicere alicui
    • to ravage with fire and sword: omnia ferro ignique, ferro atque igni or ferro flammaque vastare
    • to set fire to the siege-works: ignem inferre operibus (B. C. 2. 14)
  • De Vaan, Michiel (2008) Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, page 297