1. (abbreviation|lang=en) .  (astronomy) (alternative spelling of, lang en) ; light-year.
  2. Noun.  (astronomy, lang en) (abbreviation of, lightyear) .

This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.

This entry was last updated on RefTopia from its source on 3/20/2012.