RhymeZone: constitutive definitions

Definitions of constitutive:

adjective: having the power or authority to constitute, establish or enact something
adjective: having the power or authority to appoint someone to office
adjective: extremely important, essential
adjective: that forms a constituent part of something else
adjective: (biochemistry) (of an enzyme) that is continuously produced at a constant rate

(Definitions from Wiktionary)