a. 1. Suitable for an introduction or beginning; introductory; prefatory; as, an initiatory step. Bp. Hall. [ 1913 Webster ]
2. Tending or serving to initiate; introducing by instruction, or by the use and application of symbols or ceremonies; elementary; rudimentary. [ 1913 Webster ]
Some initiatory treatises in the law. Herbert. [ 1913 Webster ]
Two initiatory rites of the same general import can not exist together. J. M. Mason. [ 1913 Webster ]