COLLOIDS
\kˈɒlɔ͡ɪdz], \kˈɒlɔɪdz], \k_ˈɒ_l_ɔɪ_d_z]\
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Two-phase systems in which one is uniformly dispersed in another as particles small enough so they cannot be filtered or will not settle out. The dispersing or continuous phase or medium envelops the particles of the discontinuous phase. All three states of matter can form colloids among each other.
By DataStellar Co., Ltd
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A class of substances which seem to go into solution when boiled or to remain in solution when formed in water. Careful investigation has shown that they are not in solution, as in the case of the crystalline salts, but are in a very fine suspension, which, however, cannot be detected as such by the eye. The condition of a colloid in water seems to be an intermediate stage between a mere mechanical suspension and a solution of a crystalloid. Gelatin and many proteins, as silic acid and iron hydroxid, belong to this group. [Gr.]
By Smith Ely Jelliffe
Word of the day
Collagen Induced Arthritis
- ARTHRITIS that is induced in experimental animals. Immunological and infectious agents can be used to develop models. These methods include injections of stimulators the immune response, such as an adjuvant (ADJUVANTS, IMMUNOLOGIC) or COLLAGEN.