词根词缀：oro-, or-, ori-

【来源及含义】Latin: mouth, face; referring to the "mouth"

【同源单词】oroantral, orofacial, orofaciodigital syndrome, orolingual, oromaxilla, oronasal

词根词缀：rotundi-, rotundo-, rotund-

【来源及含义】Latin: rotondo, rotundus; round, rounded; from Latin, rota, "wheel"

【同源单词】obrotund, ore rotundo, orotund, orotundity, rotandify, rotund