Hipopotamus or Hippopotamus: How To spell?
The word Hipopotamus is misspelled against Hippopotamus, a noun meaning "A large, amphibious, herbivorous mammal (Hippopotamus amphibius), common in the rivers of Africa. It is allied to the hogs, and has a very thick, naked skin, a thick and square head, a very large muzzle, small eyes and ears, thick and heavy body, and short legs. It is supposed to be the behemoth of the Bible. Called also zeekoe, and river horse. A smaller species (H. Liberiencis) inhabits Western Africa."
Hippopotamus has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings hi & opotamus which should not be misspelled with single 'P'
Wrong Spelling:  hi-p-opotamus  Correct Spelling:  hi-pp-opotamus 
Check more misspelled words of Hippopotamus to spell it correct.