Constitutive

Constitutive may refer to:


 * In physics, a constitutive equation is a relation between two physical quantities
 * In ecology, a constitutive defense is one that is always active, as opposed to an inducible defense
 * Constitutive theory of statehood
 * In biochemistry and pharmacology, a constitutively active receptor produces a biological response in the absence of a bound ligand
 * In genetics, a constitutive gene is always expressed – see constitutive expression