Where does “hippo-” come from?

hippo- (English) comes from Ancient Greek ἵππος, from Proto-Hellenic íkkʷos, from Proto-Indo-European h₁éḱwos, from Proto-Indo-European h₁oh₁ḱu- — swift.

hippo- (English): horse

Definitions

horse

Ancestry of “hippo-”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἵππος	a horse, a mare; cavalry, horsemen
2	Proto-Hellenic	íkkʷos	horse
3	Proto-Indo-European	h₁éḱwos	stallion, horse
4	Proto-Indo-European	h₁oh₁ḱu-	swift

Words derived from “hippo-”

hippotherapy
hippophagy
hippology
hippic
hippophobia
hippomancy
hippophagous
hippophile
hippomorphic
hippophilia
hippophagism
hippomania
hippological
hippophobe
hippophobic
hippophilic
philhippic
necrohippoflagellation
hippocephalic
hippolith
hippopathology
hippologist
hippotomy
hippophage

Every word from Proto-Indo-European h₁oh₁ḱu- →

hippo- — Etymology, Origin & Word History | Etymology Explorer