gel3 /dʒel/ noun [countableC] British EnglishBrE old-fashioned gel• Like pectin, psyllium forms a gel which is not digested or absorbed, thereby increasing the viscosity of the meal.• Support media that may be used for electrophoretic separations include agar gel, starch gel, cellulose acetate, and acrylamide.• Agar gel and cellulose acetate are the more commonly used media in the routine clinical laboratory. 189.• It is formulated as an attractive gel with green microparticles suspended inside.• Fixed parts should be painted liberally with cold oven cleaner gel and left to stand.• The samples were then fractionated on a 6% denaturing polyacrylamide gel.• For example, ethanol can be separated from a liquid mixture of ethanol and water by shaking the mixture with silica gel.• Good news for diaphragm users fed up with slippery spermicidal gel.