Back
English Dictionary
Learn English
Learn grammar
List of words
Study your cards
Hang On, Man!
Audio Books
More apps
SPONSORED LINKS
Recent searches
lying-in
prepossessing
actualise
SPONSORED LINKS
SPONSORED LINKS
academic department
extensible
eagle
abradant
rum
seemliness
least
Hide translation
light speed
light speed
/ˈlaɪt spiːd/
noun
The speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
(
c
,
light speed
,
speed of light
)
the speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second
Back
Next
Language