Narrowing may refer to: *

Narrowing (computer science) In logic and computer science, unification is an algorithmic process of solving equations between symbolic expression (mathematics), expressions. Depending on which expressions (also called ''terms'') are allowed to occur in an equation set (also c ...

, a type of algorithm for solving equations between symbolic expressions **

Narrowing of algebraic value sets Like logic programming, narrowing of algebraic value sets gives a method of reasoning about the values in unsolved or partially solved equations. Where logic programming relies on resolution, the algebra of value sets relies on narrowing rules. Na ...

, a method for the elimination of values from a solution set which are inconsistent with the equations being solved *

Narrowing (historical linguistics) Semantic change (also semantic shift, semantic progression, semantic development, or semantic drift) is a form of language change regarding the evolution of word usage—usually to the point that the modern meaning is radically different from t ...

, a type of semantic change *

Collisional narrowing In spectroscopy, the Dicke effect, also known as Dicke narrowing or sometimes collisional narrowing, named after Robert H. Dicke, refers to narrowing of the Doppler broadening of a spectral line due to collisions the emitting species (usually an at ...

of a spectral line due to collisions of the emitting species *

Motional narrowing In physics and chemistry, motional narrowing is a phenomenon where a certain resonant frequency has a smaller linewidth than might be expected, due to motion in an inhomogeneous system.Perceptual narrowing Perceptual narrowing is a developmental process during which the brain uses environmental experiences to shape perceptual abilities. This process improves the perception of things that people experience often and causes them to experience a decline ...

, a process in brain development *

Q-based narrowing In the Neo-Gricean approach to semantics and pragmatics championed by Yale linguist Laurence Horn, the Q-principle ("Q" for "Quantity") is a reformulation of Paul Grice's maxim of quantity (''see'' Gricean maxims) combined with the first two sub-ma ...

, a concept in pragmatics *

Stenosis A stenosis (from Ancient Greek στενός, "narrow") is an abnormal narrowing in a blood vessel or other tubular organ or structure such as foramina and canals. It is also sometimes called a stricture (as in urethral stricture). ''Stricture'' ...

, the narrowing of a blood vessel or other tubular organ

See also