colloid

n. 1. (Physiol. Chem.) 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. [ 1913 Webster ]

2. (Med.) A gelatinous substance found in colloid degeneration and colloid cancer. [ 1913 Webster ]

Styptic colloid (Med.), a preparation of astringent and antiseptic substances with some colloid material, as collodion, for ready use. [ 1913 Webster ]