c, n.
(cs)
(cs)
the 3rd letter of the Roman alphabet
<noun.communication>
C c
semantic pointers
member holonym
hypernym
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
<noun.time> freq. cnt.: 1 freq. cnt.: 1
c light speed speed of light
semantic pointers
hypernym