1. (a.) Suitable for an introduction or beginning; introductory; prefatory; as, an initiatory step.

2. (a.) Tending or serving to initiate; introducing by instruction, or by the use and application of symbols or ceremonies; elementary; rudimentary.

3. (n.) An introductory act or rite.

abecedarian aboriginal antecedent antenatal anterior autochthonous autodidactic baptismal beginning budding chief coeducational creative cultural didactic disciplinary edifying educating educational educative elemental elementary embryonic enlightening exhortatory exordial fetal first foremost formative foundational fundamental gestatory headmost homiletic hortatory illuminating in embryo in its infancy in the bud inaugural inceptive inchoate inchoative incipient incunabular infant infantile informative initial initiative instructive introductive introductory inventive leading lecturing nascent natal original parturient postnatal preaching precedent preceding preceptive precessional precursory prefatory pregnant preliminary preludial prelusive prenatal preparatory prevenient primal primary prime primeval primitive primogenial prior procreative proemial propaedeutic rudimental rudimentary self-teaching teaching tuitionary ur