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：oro-, oreo-, ore-, oreino-, orein-

【来源及含义】Greek > Latin: mountain; hill

【同源单词】bathyorographical, bathyorography, Oread, Oreodon, Oreodont, oreography

词根词缀：oro-, orrho-

【来源及含义】Greek: whey, serum

【相关词根词缀】Serum, whey words are also at this sero-, ser- unit.

【同源单词】orrhology, orrhomeningitis, orrhoreaction, orrhorrhea, orrhotherapy