preparatory

Serving to make ready or prepare; introductory. synonym: preliminary.

Relating to or engaged in study or training that serves as preparation for advanced education.

In preparation for. Used with to:

Preparing or serving to prepare the way for something to follow; antecedent; preparative; introductory: as, to adopt preparatory measures.

In course of preparation; receiving preparative instruction or training: as, a preparatory student.

A preparative.

Preparing the way for anything by previous measures of adaptation; antecedent and adapted to what follows; introductory; preparative

of or pertaining to preparation, having the purpose of making something or someone ready, preparative

preceding and preparing for something