Meaning of gravitational redshift

gravita'tional red'shift

Pronunciation: [key]
— Physics, Astron. Physics,Astron.
  1. (in general relativity) the shift toward longer wavelengths of electromagnetic radiation emitted by a source in a gravitational field, esp. at the surface of a massive star. Cf. redshift.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.