light_hour | ||
1. | [ noun ] (astronomy) the distance light travels in a vacuum in one hour; approximately one billion kilometers | |
Related terms: | astronomy_unit light_year | |
Similar spelling: |
light_air light_year lighter light_reflex |
light_hour | ||
1. | [ noun ] (astronomy) the distance light travels in a vacuum in one hour; approximately one billion kilometers | |
Related terms: | astronomy_unit light_year | |
Similar spelling: |
light_air light_year lighter light_reflex |