- noun
- As seen from the inner surface, the reflected light from the skyward face of a ringworld.
- Origin
- So named because the skyward face resembles an arch overhead.
- Source
- Ringworld
- adverb
- In the direction of spin (of a rotating ringworld or orbital habitat.)
- Source
- Ringworld
- noun informal
- A person fitted with an electronic implant to stimulate the pleasure centres of the brain.
- Source
- The Ringworld Engineers
- noun
- A ring-shaped artificial habitat encircling a star.
- Source
- Ringworld