Etymologically

interiectus

Etymology and origin of the Latin word interiectus

Confidence
Established
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origin
Latin intericiō
Etymology tree
inherited borrowed derived
Latin iacio
Latin intericio
Latin interiectus
From the same root
Latin circumicio ← iacio
Latin disicio ← iacio
Latin iactus ← iacio
Latin reicio ← iacio
Latin traicio ← iacio

Forms

interiectus m (genitive interiectūs); fourth declension[1] Lewis and Short and Gaffiot spell it interjectus.[2][3]

Etymology

It is formed from Latin intericiō (“to throw or place between”) + -tus, a noun of action from that verb.[1][4][5]

Earliest recorded meaning

Its first use is in Cicero's De natura deorum, where the moon is suddenly eclipsed by the interposition of the earth (interpositu interiectuque terrae).[1][4][5]

Semantic evolution

The TLL records it once in Cicero, then in Tacitus and in poetry.[4] Besides the placing or coming of one thing between others, it was used of an interval of time: in Tacitus, Tiberius is not softened by the lapse of time (interiectu temporis).[1][2][3] Apuleius speaks of setting stones down at random intervals.[2]

Timeline

  • 81–43 BC – Cicero uses it of the earth coming between the sun and the moon.[1][4][5]
  • 98–115 AD – Tacitus uses it of an interval of time.[1][3][5]
  • c. 125–175 AD – Apuleius uses it of stones set down at intervals.[2][5]

Meanings

Noun

  1. The placing or coming between, interposition, intervention.[1][2]
  2. The interposition of a period of time, an interval.[1][2][3]
  • interiectiō

Usage notes

Nearly all examples are in the ablative singular.[4][2] The same form is also the perfect passive participle of intericiō, “placed between”.[2][3]

References

  1. ^ a b c d e f g h Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  2. ^ a b c d e f g h Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ a b c d e Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  4. ^ a b c d e Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  5. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
Cite this entry

“Interiectus.” Etymologically, 24 Oct. 2026, etymologically.com/la/interiectus. Accessed 24 Oct. 2026.

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