Definition of: crystalloid

(kris′tə·loid) adjective
Like a crystal; of or pertaining to the crystal state of matter.
—noun
1. Chem. One of a class of substances, usually crystallizable, whose solutions are readily diffusible: distinguished from colloid.
2. Bot. A crystal–like protein body found in plant cells: a protein crystal. [<Gk. krystalloeidēs like crystal]
—crys′tal·loi′dal adjective