Etymologically

alienigenus

Etymology and origin of the Latin word alienigenus

Confidence
Established
Formation
Compound
First attested
96–55 BC, Lucretius
Ultimate origin
Latin (alienus,-genus)
Etymology tree
inherited borrowed derived
Latin alienus
English alien
Latin alienigenus

Pronunciation

  • Classical: [a.li.eːˈnɪ.ɡɛ.nʊs][1]
  • Ecclesiastical: [a.li.eˈniː.d͡ʒe.nus][1]

Forms

aliēnigenus (feminine aliēnigena, neuter aliēnigenum); first/second-declension adjective[1]

Etymology

It is from Latin aliēnus (“belonging to others”) + -genus (“born”).[2][3] aliēnus is derived from alius (“other”),[4] which goes back to Proto-Italic *al-jo- and Proto-Indo-European *h₂el-io- (“another”).[4]

Earliest recorded meaning

Lucretius uses it first, of things made of matter of a different kind: food would seem to consist of alien things.[2][5]

Semantic evolution

In Valerius Maximus it means “foreign”, of examples, studies, cities and a woman of foreign blood, as opposed to native ones,[2][5] and Seneca speaks of foreign rites.[2][5] Columella uses it of plants grown from seed brought from elsewhere and of chicks hatched from another bird's eggs.[2] An inscription forbids anyone to bring a stranger's body into a tomb.[2][5]

Late writers use it of foreign peoples and lands;[5] Ammianus speaks of joining one's own forces with foreign ones.[5]

Timeline

  • 96–55 BC – Lucretius uses it of matter of a different kind.[2][3]
  • 4 BC–65 AD – Seneca speaks of foreign rites.[2][3]
  • 1st century AD – Columella uses it of plants and of chicks.[2][3]
  • c. 390 AD – Ammianus uses it of foreign forces.[5][3]

Meanings

Adjective

  1. Foreign, from or of another country; imported, exotic.[2][1]
  2. Of different or unfamiliar origin, alien.[2][1]
  3. (of things) Made of alien matter, different in kind.[2]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b c d e f g Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
Cite this entry

“Alienigenus.” Etymologically, 20 Oct. 2026, etymologically.com/la/alienigenus. Accessed 20 Oct. 2026.

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