term:

Constitutional

constitutional adj

1 : consistent with or authorized by the constitution of a state or society [ rights]
2 : regulated by, dependent on, or ruling according to a constitution [a monarchy]
3 : of, relating to, or dealing with a constitution or its interpretation, formulation, or amendment [a convention] [ lawyers]
con·sti·tu·tion·al·ly adv

Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.