WikiWord

English

lightyears

noun

Meaning

  1. A unit of length (abbreviation ly; equal to just under 10 trillion kilometres (1016 metres)) equal to the distance light travels in one Julian year; used to measure extremely large distances.
  2. (only in plural) A very long way.
  3. (only in plural) A very long time.

Etymology / origin

No prose etymology has been added yet.

No ancestor words have been linked yet.

Related words

lightning(English)flash(English)light years(English)lightspeed(English)extragalactic(English)distances(English)distance(English)parsecs(English)

Descendant words

No descendant words have been linked yet.

Sources

  1. DictionaryAPI.dev English dictionary data
lightyears — meaning and etymology | WikiWord