Etymologically

Etymology and origin of the Latin word exortus

Confidence
Established
Formation
Derivation
First attested
220–130 BC, Pacuvius
Ultimate origin
Latin exorior
Etymology tree
inherited borrowed derived
Latin exorior
Latin exortus

Forms

exortus m (genitive exortūs); fourth declension[1] The accusative plural exortos occurs in Varro.[1][2]

Etymology

It is from Latin exorior + -tus,[1][2] the noun of action of exorior (“to appear, arise”), a compound of ex- and orior (“to rise”).[3] That verb goes back to Proto-Italic *or-i- (“to rise”) and Proto-Indo-European *h3r-i- (“to rise”).[3]

Earliest recorded meaning

It is first found in Pacuvius,[3][4] in a line of tragedy saying that the sky takes on its brightness at the rising of the sun.[1]

Semantic evolution

It meant the rising of the sun, of stars and planets, and the time when a wind begins to blow.[1][5] From the rising of the sun it came to mean the east, the quarter of sunrise, often in the plural, as when Livy writes of a march from the west towards the east.[1][5] Pliny the Elder uses it for the source of a river and for the place a wind comes from,[1] and Pliny the Younger for the first appearance of an emperor.[1][6]

In medieval Latin it kept the sense of sunrise, as in Bede, and also meant an origin or beginning, a spring, a birth and offspring.[7][8]

Timeline

  • 220–130 BC – Pacuvius uses it of the rising of the sun.[1][4]
  • 116–27 BC – Varro uses the plural exortos.[1][4]
  • 81–43 BC – Cicero uses it of the rising of a constellation.[1][4]
  • 23/24–79 AD – Pliny the Elder uses it for the source of the Danube.[1][4]
  • first third of the 8th century AD – Bede uses it of sunrise in his work on time reckoning.[7][4]

Meanings

Noun

  1. The rising of the sun or a star; the time when a wind begins to blow.[1][5]
  2. Emergence, first appearance.[1][6]
  3. Sunrise as a quarter of the sky, the east (also plural).[1][5]
  4. The source of a river or of winds.[1][8]
  5. (Medieval Latin) Origin, beginning; birth; offspring.[7]

Usage notes

Exortus, -a, -um is also the perfect participle of exorior.[5][6]

References

  1. ^ a b c d e f g h i j k l m n o p Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  2. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  3. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  7. ^ a b c Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  8. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
Cite this entry

“Exortus.” Etymologically, 24 Oct. 2026, etymologically.com/la/exortus. Accessed 24 Oct. 2026.

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