Lewis & Short

ĭnĭtĭālis, e, adj. [2. in-aequus], initial, incipient, original (post-class.).

  1. I. Adj.: elementorum origo initialis, App. M. 4, p. 156, 9: saeculorum progenies, id. ib. 11, p. 259: controversiae status, Aggen. ap. Front. de Limit. p. 63 Goes.
  2. II. Subst.: ĭnĭtĭāles, ium, m. plur., those who first assembled together in a collegium, Inscr. ap. Marin. Iscriz. Alb. p. 12.