light year

L l

Transcription

- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
- [lahyt yeer]
- /laɪt yɪər/
- /laɪt jɪə(r)/

- US Pronunciation
- US IPA
- [lahyt yeer]
- /laɪt yɪər/

Definitions of light year words

noun light year Astronomy. the distance traversed by light in one mean solar year, about 5.88 trillion mi. (9.46 trillion km): used as a unit in measuring stellar distances. Abbreviation: lt-yr. 1
noun light year light-years. a very great distance, especially in development or progress: The new computer is light-years ahead of the old one. a very long time: It's been light-years since I've seen my childhood friends. 1
noun light year astronomy: measure of distance 1
countable noun light year A light year is the distance that light travels in a year. 0
countable noun light year You can say that two things are light years apart to emphasize a very great difference or a very long distance or period of time between them. 0
noun light year a unit of distance used in astronomy, equal to the distance travelled by light in one year, i.e. 9.4607 × 1012 kilometres or 0.3066 parsecs 0

See all 11 definitions of light year

Information block about the term

Origin of light year

First appearance:

before 1885

One of the 21% newest English words

First recorded in 1885-90

Historical Comparancy

Parts of speech for Light year

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Light year

light year popularity

This term is known only to a narrow circle of people with rare knowledge. Only 29% of English native speakers know the meaning of this word.

According to our data about 63% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

light year usage trend in Literature

This diagram is provided by Google Ngram Viewer