noun a gelatinous substance found in colloid degeneration and colloid cancer.
2. colloid ·adj resembling glue or jelly; characterized by a jellylike appearance; gelatinous; as, colloid tumors.
3. colloid ·noun a substance (as albumin, gum, gelatin, ·etc.) which is of a gelatinous rather than a crystalline nature, and which diffuses itself through animal membranes or vegetable parchment more slowly than crystalloids do;
opposed to crystalloid.