(optics, uncountable) A phenomenon where light, instead of passing into a medium of a lower refractive index and refracting away from the normal, is completely reflected by the boundary between the two media because it approaches at an angle greater than or equal to the critical angle.

Alternative form of total internal reflection

plural of total ordering relation

(finance) A financial derivative that transfers both the credit risk and market risk of an underlying asset.

plural of total base number

plural of total return swap