Etymologically

momentarius

Etymology and origin of the Latin word momentarius

Confidence
Established
Formation
Derivation
First attested
c. 125–175 Apuleius More words from the 2nd century
Ultimate origin
Latin mōmentum
Etymology tree
inherited borrowed derived
Latin moveō
Italian muovere
Spanish mover
Latin mōmentum
English momentum
French moment
German Moment
Italian momento
Spanish momento
Latin mōmentārius
English momentary
From the same root
Latin admoveō ← moveō
Latin āmoveō ← moveō
Latin commoveō ← moveō
Latin dēmoveō ← moveō
Latin dīmoveō ← moveō
Latin ēmoveō ← moveō
Latin mōbilis ← moveō
Latin momen ← moveō
Latin mōtor ← moveō
Latin mōtus ← moveō
Latin mōvimentum ← moveō
Latin obmoveo ← moveō
Latin permoveō ← moveō
Latin prōmoveō ← moveō
Latin removeō ← moveō
Latin sēmōtus ← moveō
Latin sēmoveō ← moveō
Latin submoveō ← moveō
Italian movimento ← muovere
Spanish movimiento ← mover

Pronunciation

  • Classical: [moː.mɛnˈtaː.ri.ʊs][1]
  • Ecclesiastical: [mo.menˈtaː.ri.us][1]

Forms

mōmentārius (feminine mōmentāria, neuter mōmentārium); first/second-declension adjective[1]

Etymology

It is formed from Latin mōmentum (“movement; moment”) + -ārius.[2] The TLL derives it from the ablative ⟨mōmentō⟩ used as an adverb, “in a moment”, and compares subitārius (“sudden”) and mōmentāneus (“momentary”).[3]

Earliest recorded meaning

It first appears in Apuleius (c. 125–175 AD), who calls a lover who stays only for moments a momentarius maritus and a quick-acting poison momentarium venenum.[4][2][5]

Semantic evolution

Lewis & Short class it as post-classical.[4] Besides Apuleius it occurs in the jurists, where Papinian speaks of present and momentary care,[3][4] in the Historia Augusta, where Elagabalus has temporary pools made of roses,[3][6] and in Ambrose.[3] A list of synonyms groups it with incerta, fortuita and casualia.[3]

English took it as momentary in the mid-15th century.[7]

Timeline

  • c. 125–175 AD – Apuleius uses it of a short-lived life, a fleeting husband and a quick poison.[2][4][5]
  • before 212 AD – Papinian, quoted in the Digest, writes of praesentem ac momentariam curam.[3][4][5]
  • c. 340–397 AD – Ambrose uses it of splendour that flashes with momentary speed.[3][5]
  • mid-15th century – English borrows it as momentary.[7]

Meanings

Adjective

  1. Lasting a short time, temporary, momentary, short-lived.[2][4][6]
  2. Acting at once, quick-acting (of a poison).[2][4][6]

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Momentarius.” Etymologically, 7 Nov. 2026, etymologically.com/la/momentarius. Accessed 8 Nov. 2026.

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