\Crys"tal*loid\ (kr?s"tal-loid), a. [Gr. kry`stallos
crystal + -oid.]
Crystal-like; transparent like crystal.

\Crys"tal*loid\, n.
1. (Chem.) A body which, in solution, diffuses readily
   through animal membranes, and generally is capable of
   being crystallized; -- opposed to colloid.
2. (Bot.) One of the microscopic particles resembling
   crystals, consisting of protein matter, which occur in
   certain plant cells; -- called also {protein crystal}.