Synonyms for

Lightyear

Verb Another word for lightyear — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

A light-year is the distance that light travels in one year, which is about 5.88 trillion miles or 9.46 trillion kilometers. It is used as a unit of measurement in astronomy.

Synonyms & similar words

parsec

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