Narrowing

Narrowing may refer to:
 * Narrowing (computer science), a type of algorithm for solving equations between symbolic expressions
 * Narrowing of algebraic value sets, a method for the elimination of values from a solution set which are inconsistent with the equations being solved
 * Narrowing (historical linguistics), a type of semantic change
 * Collisional narrowing of a spectral line due to collisions of the emitting species
 * Motional narrowing of a resonant frequency due to the inhomogeneity of the system averaging out over time
 * Perceptual narrowing, a process in brain development
 * Q-based narrowing, a concept in pragmatics
 * Stenosis, the narrowing of a blood vessel or other tubular organ