Meaning of solid solution

sol'id solu'tion

Pronunciation: [key]
  1. a solid, homogeneous mixture of substances, as glass or certain alloys.
  2. (in a crystal structure) the more or less complete substitution of one kind of atom, ion, or molecule for another that is chemically different but similar in size and shape; isomorphism.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.