outˈrider noun

1. A person who rides beside a vehicle as a guard
2. A rider sent ahead as a scout, or to ensure a clear passage

• electro-optical
• electro-optical effect
• electro-optics
• electro-osmosis
• electro-osmotic
• electrophile
• electrophiles
• electrophilic
• electrophoreses
• electrophoresis
• electrophoretic
• electrophoretically
• electrophorus
• electrophoruses
• electrophotographic
• electrophotography
• electrophysiological
• electrophysiologically
• electrophysiologist
• electrophysiologists
• electrophysiology
• electroplate
• electroplated
• electroplater
• electroplaters