ASTRONOMY UNIT

Pronunciation (US):

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 Dictionary entry overview: What does astronomy unit mean? 

• ASTRONOMY UNIT (noun)
  The noun ASTRONOMY UNIT has 1 sense:

1. a linear unit used for astronomical distances

  Familiarity information: ASTRONOMY UNIT used as a noun is very rare.

 Dictionary entry details 

• ASTRONOMY UNIT (noun)

Sense 1

Meaning:

A linear unit used for astronomical distances

Classified under:

Nouns denoting quantities and units of measure

Hypernyms ("astronomy unit" is a kind of...):

linear measure; linear unit (a unit of measurement of length)

Hyponyms (each of the following is a kind of "astronomy unit"):

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

light hour (the distance light travels in a vacuum in one hour; approximately one billion kilometers)

light minute (the distance light travels in a vacuum in one minute; approximately 18 million kilometers)

light second (the distance light travels in a vacuum in one second; approximately 300,000 kilometers)

Astronomical Unit; AU (a unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers))

parsec; secpar (a unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years)