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Meaning of lightyear

Source language: EnglishDictionary language: English

lightyear

noun

Definitions

  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.

    Example: The marathon runner in the lead is light years ahead of the one at the back.

  3. (only in plural) A very long time.

    Example: Some of Leonardo da Vinci’s inventions were light years ahead of their time.

Sources:https://en.wiktionary.org/wiki/light%20yearhttps://en.wiktionary.org/wiki/lightyear

Related words

lightningflashlight-yearlight yearmegalightyearlight centurylight millenniumkilolightyear