noun ·2 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   Alternative spelling of light year. alt-of, alternative
2. 2
   the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers wordnet

Synonyms

All synonyms

chaoskilometerlight yearmeasureouter spacespace

Example

More examples

"A light-year is the distance light travels in one year. It's 9.5 trillion (9,500,000,000,000) kilometers."

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