mobility scootermoˈbility ˌscooter noun [countable] 
a small electric vehicle that you sit on, used by people who have difficulty walking
a small electric vehicle that you sit on, used by people who have difficulty walking- Operation Desert Storm
- Operation Iraqi Freedom
- Operation Overlord
- operative
- operator
- operetta
- Ophelia
- ophthalmic
- ophthalmologist
- ophthalmology
- opiate
- opine
- opinion
- opinionated
- opinion-makers
- opinion poll
- opium
- opossum
- opp.
- Oppenheimer, J. Robert
- opponent
- opportune
- opportunely
- opportunism
- opportunist