Definitions for light year
light year

Princeton's WordNetRate this definition:0.0 / 0 votes

1. light year, light-yearnoun

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

GCIDERate this definition:0.0 / 0 votes

1. Light year

   a very large difference; -- used figuratively to express great differences (of distance, quality, time) in comparisons.

2. Light year

   The distance over which light can travel in a year's time in a vacuum, 5.88 trillion miles (9.46 trillion kilometers); -- used as a unit in expressing stellar distances. It is more than 63,000 times as great as the distance from the earth to the sun. The star nearest to the earth's sun is about 4 light years distant.

WiktionaryRate this definition:0.0 / 0 votes

1. light yearnoun

   A unit of length (abbreviation ly; equal to just under 10 trillion kilometres (10 metres)) equal to the distance light travels in one year; used to measure extremely large distances.

2. light yearnoun

   (in plural light years; figurative, informal) A very long way.

3. light yearnoun

   (in plural light years; figurative, informal, nonstandard) A very long time.

4. Etymology: light + year

WikipediaRate this definition:0.0 / 0 votes

1. light year

   A light-year, alternatively spelled light year, is a large unit of length used to express astronomical distances and is equivalent to about 9.46 trillion kilometers (9.46×1012 km), or 5.88 trillion miles (5.88×1012 mi). As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in a vacuum in one Julian year (365.25 days). Because it includes the time-measurement word "year", the term light-year is sometimes misinterpreted as a unit of time.The light-year is most often used when expressing distances to stars and other distances on a galactic scale, especially in non-specialist contexts and popular science publications. The unit most commonly used in professional astronomy is the parsec (symbol: pc, about 3.26 light-years) which derives from astrometry; it is the distance at which one astronomical unit subtends an angle of one second of arc.

ChatGPTRate this definition:0.0 / 0 votes

1. light year

   A light year is a unit of astronomical distance that represents the distance that light travels in one year in the vacuum of space. It is equivalent to approximately 5.88 trillion miles or 9.46 trillion kilometers. It is often used to measure distances outside the solar system.

Matched Categories

1. • Astronomy Unit

How to pronounce light year?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

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   Fred

   US English

   Tessa

   South African

How to say light year in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of light year in Chaldean Numerology is: 7

2. Pythagorean Numerology

   The numerical value of light year in Pythagorean Numerology is: 6

Examples of light year in a Sentence

1. Steve Vladeck:

   This was a frivolous lawsuit that never came within a light year of actually getting the court’s attention.

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=light year
2. ^ GCIDE
   https://gcide.gnu.org.ua/?q=light year
3. ^ Wiktionary
   https://en.wiktionary.org/wiki/Light_Year
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Light_Year
5. ^ ChatGPT
   https://chat.openai.com