Source : Webster's Revised Unabridged Dictionary (1913)

Disciplinal \Dis"ci*plin*al\, a.
   Relating to discipline. --Latham.

Source : WordNet®

disciplinal
     adj : designed to promote discipline; "the teacher's action was
           corrective rather than instructional"; "disciplinal
           measures"; "the mother was stern and disciplinary"
           [syn: {corrective}, {disciplinary}]