Back
English Dictionary
Learn English
Learn grammar
List of words
Study your cards
Hang On, Man!
Audio Books
More apps
SPONSORED LINKS
Recent searches
recipient
pigeon toes
coffee
SPONSORED LINKS
SPONSORED LINKS
hitting
anneal
hen
hemisphere
pile
accounts
rapporteur
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