Meaning of surface-to-surface

sur•face-to-sur•face

Pronunciation: (sûr'fis-tu-sûr'fis), [key]
— adj.
  1. (of a missile, message, etc.) capable of traveling from a base on the surface of the earth to a target also on the surface.
—adv.
  1. from a base on the surface of the earth to a target on the surface.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.