Webster’s Revised Unabridged Dictionary · 1913
Colloid
Col′loid (kŏl′loid), a. [Gr. κόλλα glue + -oid. Cf. Collodion.] Resembling glue or jelly; characterized by a jellylike appearance; gelatinous; as, colloid tumors.
Col′loid (kŏl′loid), 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.
2. (Med.) A gelatinous substance found in colloid degeneration and colloid cancer.
Styptic colloid (Med.), a preparation of astringent and antiseptic substances with some colloid material, as collodion, for ready use.