CRYSTALLOID (2)

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