1. A stage in psychosexual development when the child's interest is concentrated on the anal region; fixation at this stage is said to result in orderliness, meanness, stubbornness, compulsiveness, etc.
   - anal

Encyclopedia: Anal retentive

• osteopathist
• osteopathy
• osteopetrosis
• osteophyte
• osteoplasty
• osteoporosis
• osteosarcoma
• osteosclerosis
• osteosclerosis congenita
• osteostracan
• Osteostraci
• osteotomy
• ostiarius
• ostiary
• ostinato
• ostiole
• ostium
• ostler
• Ostmark
• ostomy
• Ostraciidae
• ostracise
• ostracism
• ostracize
• ostracod