GENUS PROTOHIPPUS(noun) Did you mean: Rhymes Also try: geneDefinitions There is 1 meaning of the phrase Genus Protohippus. Genus Protohippus - as a noun An extinct, three-toed genus of equidae (protohippus) Word Variations & RelationsStarts G Starts GE Starts GEN Starts GENU Ends S Ends US Ends PUS Ends PPUS Starts G & ends S Starts GE & ends S Starts G & ends US A-Z Proximitiesgenuine 8genuinely 13genuineness 12genuinenesses 14genus 6 Genus Protohippus genus-fenusagenus-megapodiusgenus-milvusgenuses 8genyonemus