Ringworld

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An artificial megastructure in space, consisting of a rotating ring encircling a star and having an inhabitable inner surface with gravity produced through centripetal force.

Example

More examples

"Larry Niven's sci-fi franchise of Ringworld and Known Space stimulated my teenage years. Ringworld was a gigantic structure, a ribbon habitat that encircled a sun. I imagined, as I bicycled around my home of Lulu Island, that the terrain was part of Ringworld. Niven reinforced my belief that some aliens did not have humanoid shape."

Etymology

From ring + world, introduced by Larry Niven in the novel Ringworld (1970).

Related phrases

centripetal force

More for "ringworld"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.