CONSTITUTIVE
constitutional, constituent(a), constitutive, organic
(adjective) constitutional in the structure of something (especially your physical makeup)
Source: WordNet® 3.1
Etymology
Adjective
constitutive (comparative more constitutive, superlative most constitutive)
having the power or authority to constitute, establish or enact something
having the power or authority to appoint someone to office
extremely important, essential
that forms a constituent part of something else
(biochemistry) (of an enzyme) that is continuously produced at a constant rate
Source: Wiktionary
Con"sti*tu`tive, a.
1. Tending or assisting to constitute or compose; elemental;
essential.
An ingredient and constitutive part of every virtue. Barrow.
2. Having power to enact, establish, or create; instituting;
determining. Sir W. Hamilton.
Source: Webster’s Unabridged Dictionary 1913 Edition