light-year

English Thesaurus

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

hypernym	:	astronomy unit,
definition	:	a linear unit used for astronomical distances (noun.quantity)

part holonym	:	light hour,
definition	:	the distance light travels in a vacuum in one hour; approximately one billion kilometers (noun.quantity)

part holonym	:	light minute,
definition	:	the distance light travels in a vacuum in one minute; approximately 18 million kilometers (noun.quantity)

part holonym	:	light second,
definition	:	the distance light travels in a vacuum in one second; approximately 300,000 kilometers (noun.quantity)