preparatory
adjectiveadjective NAmE//prɪˈpɛrəˌtɔri//
, NAmE//ˈprɛpərəˌtɔri//
(formal)
jump to other results done in order to prepare for something preparatory meetings After a few preparatory drawings, she completed the portrait in one session. Security checks had been carried out preparatory to (= to prepare for) the President's visit.
See preparatory in the Oxford Advanced Learner's Dictionary