Definition of Coloid
Col"loid (?), a. [Gr.
ko`lla glue + -oid. Cf. Collodion.]
Resembling glue or jelly; characterized by a jellylike
appearance; gelatinous; as, colloid tumors.
Col"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.
- Webster's Unabridged Dictionary (1913)
- (chemistry) a stable system of two phases, one of which is dispersed in the other in the form of very small droplets or particles
- The Nuttall Encyclopedia
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