|Origin:||Greek ekleipsis, from ekleipein 'to leave out, fail'|
an occasion when the sun or the moon cannot be seen, because the Earth is passing directly between the moon and the sun, or because the moon is passing directly between the Earth and the sun:
an eclipse of the sun
a situation in which someone or something loses their power or fame, because someone or something else has become more powerful or famous:
Many people expected the growth of television to mean the eclipse of radio.
less famous or powerful than you should be:
Mrs Bosanquet's novels are now in eclipse.