a combining form appearing in loanwords from Greek, where it meant “horse” (hippodrome); on this model, used in the formation of compound words (hippology).
Words nearby hippo-
Also especially before a vowel, hipp-.
Origin of hippo-
< Greek: combining form of híppos; cognate with Latin equus, Old Irish ech, Old English eoh, Sanskrit aśvas, Lithuanian ašvà
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019