An upturned vial of hair gel Silica gel A gel is a semi-solid that can have properties ranging from soft and weak to hard and tough. [1][2] Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady state, although the liquid phase may still diffuse through this system. [3] IUPAC definition for a gel Gels are mostly liquid by mass, yet they behave ...
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gel, coherent mass consisting of a liquid in which particles too small to be seen in an ordinary optical microscope are either dispersed or arranged in a fine network throughout the mass. A gel may be notably elastic and jellylike (as gelatin or fruit jelly), or quite solid and rigid (as silica gel, a material that looks like coarse white sand and is used as a dehumidifier). Gels are colloids ...
The meaning of GEL is a colloid in a more solid form than a sol; broadly : jelly. How to use gel in a sentence.
GEL definition: a semirigid colloidal dispersion of a solid with a liquid or gas, as jelly, glue, etc. See examples of gel used in a sentence.
A gel is a sol in which the solid particles are meshed such that a rigid or semi-rigid mixture results. Cross-linking within the gel's polymer or colloidal network causes a gel to behave as a solid in its steady-state and makes it feel tacky. However, most of the mass of a gel is liquid, so gels can flow from application of relatively low stress.