1. Of or relating to the psychological cause of a disorder
   - psychogenic 
2. Of or relating to the origin and development of the mind

See also: psychogenesis

• orphaned
• orphanhood
• orphans' asylum
• orphenadrine
• Orpheus
• orphic
• orphrey
• orpiment
• orpin
• orpine
• Orpington
• Orr
• orrery
• orris
• orrisroot
• Orson Welles
• ort
• Ortalis
• ortanique
• Ortega
• Ortega y Gasset
• orthicon
• Orthilia
• ortho-
• orthoboric acid