colloid
/kol-oid/US // ˈkɒl ɔɪd //UK // (ˈkɒlɔɪd) //
胶体,胶质,胶状物,胶质体
Definitions
n.名词 noun
- 1
- : Physical Chemistry. a substance made up of a system of particles with linear dimensions in the range of about 10−7 to 5 × 10−5 centimeters dispersed in a continuous gaseous, liquid, or solid medium whose properties depend on the large specific surface area. The particles can be large molecules like proteins, or solid, liquid, or gaseous aggregates and they remain dispersed indefinitely.Compare aerosol, emulsion, gel, sol, suspension.
- : Medicine/Medical. a colloidal substance in the body, as a stored secretion or a cyst.
adj.形容词 adjective
- 1
- : Physical Chemistry. colloidal.
Examples
The charge on a colloid seems to be liable to variation with the nature of the liquid in which it is suspended.
In fact, no exact knowledge of the source of electrification of any colloid has yet been obtained.
We may even have one and the same substance—either organic or inorganic—in both conditions, as crystal or as colloid.
A colloid globule suspended in a salt solution in which it is not dissolved may grow by intussusception.
There remains the question of the precipitation of the tanning colloid at the interface.
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