LATIN DICTIONARYLexicon Latīnum
noun · neutersecond declension

excidium1

excidium n (genitive excidiī or excidī)
Classical[ɛksˈkɪ.di.ũː]Ecclesiastical[eksˈt͡ʃiː.di.um]

Meaning

  1. neuterdemolition, destruction (especially military), ruin
    De Excidio BritanniaeOn the Ruin of Britain
  2. neutermassacre, slaughter, killing

Declension

declension
formsingularplural
nominativeexcidiumexcidia
genitiveexcidiī
excidī
excidiōrum
dativeexcidiōexcidiīs
accusativeexcidiumexcidia
ablativeexcidiōexcidiīs
vocativeexcidiumexcidia

excĭdĭum (sometimes written exscidium, as if from exscindo), ii, n. usually referred to ex-cīdo,
I. overthrow, demolition, subversion, ruin (especially of cities, buildings, etc.), destruction (not freq. till the Aug. per.; not in Caes. and Cic.): urbis, Liv. 27, 39 fin.; Tac. H. 1, 80; 3, 76; Verg. A. 5, 626.—In plur.: petit urbem excidiis, Verg. G. 2, 505; id. A. 2, 643; 10, 46; Liv. 9, 45; 29, 1 al.: castellorum, Tac. H. 4, 15: arcium, Verg. A. 12, 655: Libyae, id. ib. 1, 22: gentium, Vell. 2, 98, 2; Tac. H. 5, 25; cf. Cretensium, Sall. H. Fragm. p. 290 ed. Gerl.: legionum, Tac. H. 4, 61: meorum, Verg. A. 8, 386 et saep.

Origins

From exscindō (“to annihilate, extirpate”) + -ium, from scindō (“to rend, destroy”), compare discidium (“disagreement, discord”). Sometimes construed by folk-etymology as from excīdō (“to cut out, destroy”) + -ium.

noun · neutersecond declension
excidium2
excidium n (genitive excidiī or excidī)
Classical[ɛksˈkɪ.di.ũː]Ecclesiastical[eksˈt͡ʃiː.di.um]

Meaning

  1. neuterthe setting of the sun

Declension

declension
formsingularplural
nominativeexcidiumexcidia
genitiveexcidiī
excidī
excidiōrum
dativeexcidiōexcidiīs
accusativeexcidiumexcidia
ablativeexcidiōexcidiīs
vocativeexcidiumexcidia

excĭdĭum, ii, n. excĭdo,
I. a going down, setting: solis, Prud. Apoth. 694.

Origins

From excidō + -ium, from cadō (“to fall”).

Quick answers

What does excidium mean in Latin?
excidium, a noun, means “demolition, destruction (especially military), ruin; massacre, slaughter, killing”.
What is the genitive of excidium?
The genitive singular is excidiī. excidium is neuter, second declension.
How do you pronounce excidium?
In classical Latin, [ɛksˈkɪ.di.ũː]; in ecclesiastical (church) Latin, [eksˈt͡ʃiː.di.um].