Etymologically

hippopotamus

Etymology and origin of the Latin word hippopotamus

Confidence
Established
Formation
Borrowing
First attested
116–27 BC Varro More words from the 2nd century BC
Borrowed from
Ancient Greek ἱπποπόταμος
Ultimate origin
Ancient Greek ἱπποπόταμος
Etymology tree
inherited borrowed derived
Latin hippopotamus
English hippopotamus

Pronunciation

  • Classical: [hɪp.pɔˈpɔ.ta.mʊs][1]
  • Ecclesiastical: [ip.poˈpɔː.ta.mus][1]

Forms

hippopotamus m (genitive hippopotamī); second declension[1]

Etymology

It is borrowed from Ancient Greek ἱπποπόταμος (hippopótamos),[2][1] from ἵππος (híppos, “horse”) and ποταμός (potamós, “river”).[1] Etymonline calls the Greek word an irregular formation from the earlier phrase ἵππος ποτάμιος (híppos potámios, “horse of the river”),[3] which also gave the by-form ⟨hippopotamius⟩.[2][4]

Earliest recorded meaning

Varro (116–27 BC) has the by-form hippopotamios for the river horse.[4]

Semantic evolution

Vitruvius, Pomponius Mela and Pliny the Elder use it of the African river animal.[5][4][6] Later writers, among them Ammianus Marcellinus, describe it as well.[6][4]

In Medieval Latin it was glossed equus fluvialis, “river horse”.[7][8] British texts sometimes treat it as a fish, following Isidore of Seville.[8]

Timeline

  • 116–27 BC – Varro has the form hippopotamios.[4]
  • c. 84–c. 25 BC – Vitruvius mentions the animal.[5][9]
  • 43/44 AD – Pomponius Mela uses the form hippopotamios.[4][9]
  • 23/24–79 AD – Pliny the Elder describes it.[6][9]
  • c. 390 AD – Ammianus Marcellinus writes of it.[6][9]
  • 1560s – English borrows it, replacing Middle English ypotame.[3]

Meanings

Noun

  1. The hippopotamus, the river horse.[2][6]

Usage notes

The OLD and Georges record the by-form hippopotamius (hippopotamios) beside hippopotamus.[2][4]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ a b c d e f g Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  5. ^ a b Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  6. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  8. ^ a b Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  9. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de

Related etymologies

Cite this entry

“Hippopotamus.” Etymologically, 7 Nov. 2026, etymologically.com/la/hippopotamus. Accessed 8 Nov. 2026.

Last edited on . ·