astronomy unit 1
noundomain: quantity
Princeton WordNet [ver.3.1]
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EnglishDefinition
a linear unit used for astronomical distances
Hypernym
linear unit 1
noun
a unit of measurement of length
EnglishHyponym
light year 1
noun
the distance that light travels in a vacuum in 1 year; 5.88 trillion miles or 9.46 trillion kilometers
light hour 1
noun
the distance light travels in a vacuum in one hour; approximately one billion kilometers
light minute 1
noun
the distance light travels in a vacuum in one minute; approximately 18 million kilometers
light second 1
noun
the distance light travels in a vacuum in one second; approximately 300,000 kilometers
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)
