Hippo

geographical name

Hip·​po ˈhi-(ˌ)pō How to pronounce Hippo (audio)
variants or Hippo Regius
ˈrē-jəs How to pronounce Hippo (audio)
-jē-əs
ancient city in northern Africa south of modern Annaba, Algeria; chief town of Numidia

Browse Nearby Words

Cite this Entry

“Hippo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Hippo. Accessed 11 Jun. 2026.

Kids Definition

hippo

noun
hip·​po ˈhip-ō How to pronounce hippo (audio)
plural hippos
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster