institutionary

Relating to an institution or institutions.

[…] Dr. Grant had brought on apoplexy and death, by three great institutionary dinners in one week, […]

The second class of rites are memorial in character. As the former were addressed to the gods, so these are chiefly for the benefit of the people. They are didactic, to preserve the myth, or institutionary, to keep alive the discipline and forms of the church.

Containing the first principles or doctrines; rudimentary.

[…] among the Institutionary rules of youth, [Aristotle] adviseth they might not be permitted to hear Iambicks and Tragedies before they were admitted unto discumbency or lying along with others at their meales.

1772, Review of Macbride’s Introduction to the Theory and Practice of Physic, The Monthly Review, Volume 47, November 1772, p. 381, The first or institutionary part, which is divided into seven books, explains the principles on which the art is founded, and may be read with pleasure even by those who would wish only to be acquainted with the theory of medicine, considered as a curious and interesting branch of natural philosophy.