light-year

1. 1.

   the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers

   Synonymslight year

   Broaderastronomy unit

   Partslight hourlight minutelight second

Questions about light-year

What does light-year mean?

light-year means "the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers".

How many syllables are in light-year?

light-year has 2 syllables: ligh-t-year. The stress falls on "ligh". In IPA it is /ˈlaɪˌtjɪɹ/.

What is another word for light-year?

Close synonyms include light year. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is light-year a common word?

light-year is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.