D defs.my
Entry 3 senses Webster, 1913

Institutional

/ĭnˌ-stĭt-o͞osh'-ən-əl/ · In·sti·tu·tion·al · IPA /ˌɪn.stɪˈtju.ʃə.nəl/
01 a. Pertaining to, or treating of, an institution or institutions; as, institutional legends.
  1. 1.
    Pertaining to, or treating of, an institution or institutions; as, institutional legends.
    Institutional writers as Rousseau.” — J. S. Mill.
  2. 2.
    Instituted by authority.
  3. 3.
    Elementary; rudimental.