(1) This term means an interval of time during which a veteran or eligible person:
(i) Is enrolled in an educational institution; and
(ii) Is pursuing his or her program of education.
(2) This term applies to each unit course or subject in the veteran's or eligible person's program of education.
38 CFR § 21.4200
The definitions in this section apply to this subpart, except as otherwise provided. The definitions of terms defined in this section also apply to subparts C, G, H, K, L, and P if they are not otherwise defined for purposes of those subparts.