primum mobile /prīˈməm mōˈbi-lē, mobˈi-lē or prēˈmŭm mōˈbi-le/

1. In medieval astronomy, the outermost of the revolving spheres of the universe, carrying the others round in 24 hours
2. Any great source of motion

• ophthalmoscopy
• opiate
• opiated
• opiates
• opiating
• opificer
• opificers
• opinable
• opine
• opined
• opines
• opinicus
• opinicuses
• opining
• opinion
• opinionated
• opinionatedly
• opinionatedness
• opinionately
• opinionative
• opinionatively
• opinionativeness
• opinionator
• opinionators
• opinioned