noun-modifying (irregular)
multistage; cascade
Used as a prenominal modifier (adj-f) to describe something with multiple stages or levels, such as a multistage rocket or cascade connection.
Development of multistage rockets is progressing.
I passed after going through a multistage screening.
multistage rocket
Compound of 多 (many) and 段 (stage, step). The reading ただん is the standard on'yomi combination.