light second

Fetched 2026-10-26 (cache).

Synonyms: eighty second

Antonyms: eighty second

Related words from Datamuse; suggestions, not definitions.

Noun

1. {{lb|en|astronomy|physics}} A unit of [[length]] equal to the [[distance]] [[light]] travels in one [[second]]: about 300 [[megameter]]s

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.